			Notice of Expiration of Patents
		     Due to Failure to Pay Maintenance Fee

   35 U.S.C. 41 and 37 CFR 1.362(g) provide that if the required 
maintenance fee and any applicable surcharge are not paid in a patent 
requiring such payment, the patent will expire at the end of the 4th, 8th 
or 12th anniversary of the grant of the patent depending on the first 
maintenance fee which was not paid.
   According to the records of the Office, the patents listed below have
expired due to failure to pay the required maintenance fee and any
applicable surcharge.
   
		  PATENTS WHICH EXPIRED ON February 16, 2002
		    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent  	                   Serial                            Issue
Number          	           Number                             Date

139,586   			 71/116,422   			02/08/1921          
139,525   			 71/133,574   			02/08/1921          
139,517   			 71/133,729   			02/08/1921          
139,529   			 71/133,916   			02/08/1921          
139,653   			 71/134,443   			02/08/1921          
139,654   			 71/134,444   			02/08/1921          
139,501   			 71/134,939   			02/08/1921          
139,613   			 71/135,071   			02/08/1921          
139,597   			 71/135,821   			02/08/1921          
280,136   			 71/302,166   			02/10/1931          
279,996   			 71/302,759   			02/10/1931          
280,275   			 71/305,664   			02/10/1931          
280,019   			 71/306,621   			02/10/1931          
384,742   			 71/423,439   			02/04/1941          
384,754   			 71/429,131   			02/04/1941          
384,774   			 71/433,240   			02/04/1941          
384,788   			 71/434,230   			02/04/1941          
384,800   			 71/435,020   			02/04/1941          
384,811   			 71/435,258   			02/04/1941          
384,826   			 71/435,646   			02/04/1941          
384,844   			 71/435,896   			02/04/1941          
384,858   			 71/436,184   			02/04/1941          
384,891   			 71/436,746   			02/04/1941          
384,894   			 71/436,777   			02/04/1941          
537,472   			 71/541,168   			02/06/1951          
537,238   			 71/563,358   			02/06/1951          
537,280   			 71/573,259   			02/06/1951          
537,490   			 71/580,209   			02/06/1951          
537,339   			 71/584,417   			02/06/1951          
537,358   			 71/585,913   			02/06/1951          
537,415   			 71/591,599   			02/06/1951          
537,447   			 71/592,822   			02/06/1951          
554,476   			 71/616,762   			02/05/1952          
710,750   			 72/051,488   			02/07/1961          
710,751   			 72/051,489   			02/07/1961          
710,809   			 72/055,651   			02/07/1961          
710,915   			 72/057,735   			02/07/1961
710,792   			 72/059,671   			02/07/1961
710,772   			 72/064,389   			02/07/1961
710,969   			 72/072,009   			02/07/1961
710,971   			 72/072,010   			02/07/1961
710,916   			 72/072,013   			02/07/1961
710,931   			 72/072,015   			02/07/1961
710,990   			 72/072,016   			02/07/1961
710,765   			 72/072,019   			02/07/1961
710,898   			 72/072,021   			02/07/1961
710,783   			 72/072,311   			02/07/1961
710,975   			 72/075,910   			02/07/1961
710,900   			 72/076,210   			02/07/1961
710,901   			 72/076,212   			02/07/1961
710,933   			 72/076,295   			02/07/1961
710,718   			 72/076,554   			02/07/1961
710,752   			 72/078,976   			02/07/1961
710,858   			 72/082,340   			02/07/1961
710,859   			 72/082,721   			02/07/1961
710,798   			 72/083,712   			02/07/1961
710,999   			 72/083,815   			02/07/1961
710,829   			 72/083,975   			02/07/1961
710,830   			 72/085,057   			02/07/1961
710,905   			 72/085,800   			02/07/1961
710,850   			 72/085,920   			02/07/1961
710,884   			 72/085,939   			02/07/1961
710,912   			 72/087,931   			02/07/1961
710,940   			 72/091,377   			02/07/1961
710,837   			 72/093,024   			02/07/1961
710,761   			 72/094,131   			02/07/1961
710,777   			 72/094,791   			02/07/1961
710,951   			 72/095,309   			02/07/1961
710,952   			 72/095,310   			02/07/1961
710,757   			 72/095,431   			02/07/1961
710,758   			 72/095,432   			02/07/1961
710,727   			 72/095,840   			02/07/1961
710,980   			 72/096,088   			02/07/1961
710,957   			 72/096,219   			02/07/1961
710,840   			 72/096,609   			02/07/1961      
711,016   			 72/096,923   			02/07/1961      
710,854   			 72/096,926   			02/07/1961      
710,855   			 72/096,927   			02/07/1961      
710,963   			 72/096,968   			02/07/1961      
710,764   			 72/097,004   			02/07/1961      
710,889   			 72/097,149   			02/07/1961      
710,788   			 72/097,900   			02/07/1961      
710,885   			 72/097,958   			02/07/1961      
710,737   			 72/098,604   			02/07/1961      
710,721   			 72/098,882   			02/07/1961      
710,741   			 72/099,227   			02/07/1961      
710,778   			 72/099,661   			02/07/1961      
710,849   			 72/099,812   			02/07/1961      
710,881   			 72/099,819   			02/07/1961      
710,968   			 72/100,523   			02/07/1961      
710,811   			 72/100,856   			02/07/1961      
710,795   			 72/104,013   			02/07/1961      
907,679   			 72/262,990   			02/09/1971      
907,374   			 72/313,375   			02/09/1971      
907,718   			 72/313,731   			02/09/1971      
907,629   			 72/320,810   			02/09/1971      
907,429   			 72/321,091   			02/09/1971      
907,674   			 72/323,041   			02/09/1971      
907,632   			 72/324,422   			02/09/1971      
907,521   			 72/325,211   			02/09/1971      
907,633   			 72/325,225   			02/09/1971      
907,406   			 72/331,858   			02/09/1971      
907,464   			 72/332,430   			02/09/1971      
907,407   			 72/332,768   			02/09/1971      
907,382   			 72/335,221   			02/09/1971      
907,571   			 72/338,287   			02/09/1971      
907,366   			 72/339,715   			02/09/1971      
907,468   			 72/342,640   			02/09/1971      
907,409   			 72/343,294   			02/09/1971      
907,668   			 72/343,351   			02/09/1971      
907,646   			 72/343,629   			02/09/1971      
907,606   			 72/346,001   			02/09/1971      
907,402   			 72/346,160   			02/09/1971      
907,647   			 72/346,233   			02/09/1971      
907,649   			 72/346,952   			02/09/1971      
907,506   			 72/347,296   			02/09/1971      
907,556   			 72/347,999   			02/09/1971      
907,616   			 72/348,450   			02/09/1971      
907,390   			 72/349,750   			02/09/1971      
907,539   			 72/350,781   			02/09/1971      
907,510   			 72/351,360   			02/09/1971      
907,672   			 72/353,116   			02/09/1971      
907,562   			 72/353,141   			02/09/1971      
907,620   			 72/355,095   			02/09/1971      
907,367   			 72/358,520   			02/09/1971      
907,548   			 72/359,258   			02/09/1971      
907,585   			 72/360,422   			02/09/1971      
907,358   			 72/368,018   			02/09/1971      
1,146,869 			 73/089,369   			02/10/1981  
1,146,774 			 73/129,097   			02/10/1981    
1,146,881 			 73/143,550   			02/10/1981    
1,146,814 			 73/147,717   			02/10/1981    
1,146,882 			 73/148,117   			02/10/1981    
1,146,888 			 73/158,736   			02/10/1981    
1,146,877 			 73/158,803   			02/10/1981    
1,146,801 			 73/165,003   			02/10/1981    
1,146,973 			 73/168,827   			02/10/1981    
1,146,931 			 73/169,123   			02/10/1981    
1,146,966 			 73/169,568   			02/10/1981    
1,146,938 			 73/171,522   			02/10/1981    
1,146,817 			 73/173,570   			02/10/1981    
1,146,884 			 73/173,766   			02/10/1981    
1,146,933 			 73/173,980   			02/10/1981    
1,146,936 			 73/174,647   			02/10/1981    
1,146,962 			 73/177,124   			02/10/1981    
1,146,971 			 73/177,297   			02/10/1981    
1,146,963 			 73/177,410   			02/10/1981    
1,146,934 			 73/177,606   			02/10/1981    
1,146,925 			 73/177,730   			02/10/1981    
1,146,948 			 73/178,811   			02/10/1981    
1,146,820 			 73/183,864   			02/10/1981    
1,146,779 			 73/189,091   			02/10/1981    
1,146,843 			 73/190,007   			02/10/1981    
1,146,780 			 73/192,231   			02/10/1981    
1,146,848 			 73/196,195   			02/10/1981    
1,146,826 			 73/198,226   			02/10/1981    
1,146,920 			 73/206,698   			02/10/1981    
1,146,921 			 73/207,544   			02/10/1981    
1,146,909 			 73/207,723   			02/10/1981    
1,146,830 			 73/208,577   			02/10/1981    
1,146,895 			 73/210,623   			02/10/1981    
1,146,856 			 73/211,659   			02/10/1981    
1,146,863 			 73/213,515   			02/10/1981    
1,146,864 			 73/214,097   			02/10/1981    
1,146,866 			 73/214,149   			02/10/1981    
1,146,867 			 73/214,456   			02/10/1981    
1,146,831 			 73/214,520   			02/10/1981    
1,146,786 			 73/217,915   			02/10/1981    
1,146,916 			 73/218,977   			02/10/1981    
1,146,850 			 73/219,735   			02/10/1981    
1,146,804 			 73/219,923   			02/10/1981    
1,146,792 			 73/220,808   			02/10/1981    
1,146,793 			 73/220,809   			02/10/1981    
1,146,891 			 73/220,870   			02/10/1981    
1,146,892 			 73/221,384   			02/10/1981    
1,146,787 			 73/222,233   			02/10/1981    
1,146,886 			 73/224,866   			02/10/1981    
1,146,887 			 73/224,867   			02/10/1981    
1,146,806 			 73/225,729   			02/10/1981    
1,146,836 			 73/227,096   			02/10/1981    
1,146,796 			 73/227,100   			02/10/1981    
1,146,837 			 73/227,116   			02/10/1981    
1,156,934 			 73/228,327   			06/09/1981    
1,146,810 			 73/231,444   			02/10/1981        
1,146,893 			 73/231,884   			02/10/1981          
1,146,842 			 73/236,013   			02/10/1981          
1,634,471 			 73/383,377   			02/05/1991          
1,634,472 			 73/597,672   			02/05/1991          
1,634,263 			 73/606,616   			02/05/1991          
1,582,235 			 73/633,003   			02/13/1990          
1,634,288 			 73/637,591   			02/05/1991          
1,574,963 			 73/650,896   			01/02/1990          
1,581,616 			 73/709,724   			02/06/1990          
1,633,905 			 73/715,549   			02/05/1991          
1,634,141 			 73/753,527   			02/05/1991          
1,634,477 			 73/753,557   			02/05/1991          
1,577,391 			 73/755,877   			01/16/1990          
1,634,243 			 73/756,769   			02/05/1991          
1,592,580 			 73/759,894   			04/17/1990          
1,633,636 			 73/767,996   			02/05/1991          
1,569,094 			 73/773,595   			12/05/1989          
1,634,400 			 73/774,927   			02/05/1991          
1,633,756 			 73/775,633   			02/05/1991          
1,633,916 			 73/776,747   			02/05/1991          
1,577,342 			 73/777,272   			01/16/1990          
1,579,843 			 73/777,280   			01/30/1990          
1,575,598 			 73/780,420   			01/02/1990          
1,634,482 			 73/782,477   			02/05/1991          
1,634,061 			 73/788,486   			02/05/1991          
1,634,062 			 73/788,487   			02/05/1991          
1,634,063 			 73/788,488   			02/05/1991          
1,633,760 			 73/790,676   			02/05/1991          
1,634,373 			 73/792,563   			02/05/1991          
1,571,704 			 73/794,229   			12/19/1989          
1,577,037 			 73/794,446   			01/09/1990          
1,571,480 			 73/795,158   			12/19/1989          
1,633,767 			 73/799,920   			02/05/1991          
1,578,057 			 73/800,456   			01/16/1990          
1,634,412 			 73/801,757   			02/05/1991          
1,578,983 			 73/803,230   			01/23/1990          
1,576,274 			 73/805,545   			01/09/1990          
1,633,769 			 73/806,498   			02/05/1991          
1,633,771 			 73/806,507   			02/05/1991          
1,634,393 			 73/806,968   			02/05/1991          
1,634,148 			 73/808,330   			02/05/1991          
1,634,374 			 73/809,539   			02/05/1991          
1,634,338 			 73/809,796   			02/05/1991          
1,633,646 			 73/809,809   			02/05/1991          
1,585,177 			 73/810,876   			02/27/1990          
1,584,699 			 73/811,330   			02/27/1990          
1,587,844 			 73/815,016   			03/20/1990          
1,584,477 			 73/815,122   			02/27/1990          
1,587,845 			 73/815,127   			03/20/1990          
1,633,778 			 73/817,016   			02/05/1991          
1,633,779 			 73/818,927   			02/05/1991          
1,633,626 			 73/819,936   			02/05/1991          
1,634,315 			 73/823,230   			02/05/1991          
1,633,674 			 73/824,362   			02/05/1991          
1,634,494 			 73/824,582   			02/05/1991  
1,633,782 			 73/826,808   			02/05/1991  
1,633,651 			 73/827,334   			02/05/1991  
1,633,786 			 73/829,711   			02/05/1991  
1,634,427 			 73/830,245   			02/05/1991  
1,634,014 			 73/831,591   			02/05/1991  
1,633,957 			 73/831,937   			02/05/1991  
1,633,959 			 73/832,004   			02/05/1991  
1,633,794 			 73/832,476   			02/05/1991  
1,633,796 			 73/832,788   			02/05/1991  
1,634,076 			 73/833,475   			02/05/1991  
1,634,064 			 73/833,480   			02/05/1991  
1,634,503 			 73/834,492   			02/05/1991  
1,634,506 			 73/835,122   			02/05/1991  
1,633,800 			 73/835,559   			02/05/1991  
1,633,981 			 73/835,824   			02/05/1991  
1,634,507 			 73/836,538   			02/05/1991  
1,634,344 			 73/837,421   			02/05/1991  
1,633,705 			 73/838,736   			02/05/1991  
1,633,657 			 73/838,971   			02/05/1991  
1,634,195 			 73/839,537   			02/05/1991  
1,634,156 			 73/839,790   			02/05/1991  
1,634,255 			 74/000,316   			02/05/1991  
1,634,432 			 74/000,889   			02/05/1991  
1,634,512 			 74/003,822   			02/05/1991  
1,633,810 			 74/003,978   			02/05/1991  
1,633,811 			 74/005,269   			02/05/1991  
1,634,157 			 74/006,109   			02/05/1991  
1,633,707 			 74/006,734   			02/05/1991  
1,634,383 			 74/010,919   			02/05/1991  
1,633,710 			 74/010,947   			02/05/1991  
1,634,435 			 74/011,297   			02/05/1991  
1,634,159 			 74/016,319   			02/05/1991  
1,634,414 			 74/020,207   			02/05/1991  
1,633,824 			 74/021,124   			02/05/1991  
1,634,516 			 74/021,234   			02/05/1991  
1,633,825 			 74/022,501   			02/05/1991  
1,633,630 			 74/023,101   			02/05/1991  
1,633,929 			 74/023,256   			02/05/1991  
1,634,112 			 74/025,136   			02/05/1991  
1,634,027 			 74/025,464   			02/05/1991  
1,633,964 			 74/034,157   			02/05/1991  
1,633,835 			 74/034,182   			02/05/1991  
1,634,220 			 74/034,364   			02/05/1991  
1,634,353 			 74/034,524   			02/05/1991  
1,634,036 			 74/034,584   			02/05/1991  
1,634,037 			 74/035,048   			02/05/1991  
1,633,717 			 74/035,069   			02/05/1991  
1,634,538 			 74/039,011   			02/05/1991  
1,633,966 			 74/039,260   			02/05/1991  
1,634,540 			 74/039,357   			02/05/1991  
1,634,167 			 74/039,555   			02/05/1991  
1,634,406 			 74/039,932   			02/05/1991  
1,634,354 			 74/040,893   			02/05/1991  
1,634,544 			 74/041,163   			02/05/1991  
1,633,632 			 74/041,393   			02/05/1991          
1,634,546 			 74/041,471   			02/05/1991          
1,634,357 			 74/043,602   			02/05/1991          
1,634,117 			 74/043,933   			02/05/1991          
1,634,562 			 74/044,940   			02/05/1991          
1,634,284 			 74/044,971   			02/05/1991          
1,634,563 			 74/045,134   			02/05/1991          
1,634,101 			 74/045,255   			02/05/1991          
1,634,564 			 74/045,319   			02/05/1991          
1,634,565 			 74/045,384   			02/05/1991          
1,634,261 			 74/046,379   			02/05/1991          
1,633,723 			 74/047,006   			02/05/1991          
1,633,866 			 74/047,876   			02/05/1991          
1,633,868 			 74/048,156   			02/05/1991          
1,634,464 			 74/048,606   			02/05/1991          
1,634,052 			 74/049,177   			02/05/1991          
1,633,737 			 74/049,775   			02/05/1991          
1,634,173 			 74/050,478   			02/05/1991          
1,633,884 			 74/050,554   			02/05/1991          
1,634,579 			 74/050,561   			02/05/1991          
1,633,669 			 74/050,747   			02/05/1991  
1,633,887 			 74/050,973   			02/05/1991  
1,633,889 			 74/051,341   			02/05/1991  
1,634,175 			 74/052,250   			02/05/1991  
1,634,178 			 74/052,380   			02/05/1991  
1,634,181 			 74/053,322   			02/05/1991  
1,633,634 			 74/053,469   			02/05/1991  
1,633,897 			 74/053,636   			02/05/1991  
1,634,238 			 74/053,687   			02/05/1991  
1,634,196 			 74/054,114   			02/05/1991  
1,633,686 			 74/054,494   			02/05/1991  
1,634,134 			 74/055,341   			02/05/1991  
1,634,060 			 74/055,820   			02/05/1991  
1,633,728 			 74/056,580   			02/05/1991  
1,634,585 			 74/057,588   			02/05/1991  
1,633,939 			 74/058,220   			02/05/1991  
1,633,943 			 74/058,958   			02/05/1991  
1,633,977 			 74/059,251   			02/05/1991  
1,634,199 			 74/060,334   			02/05/1991
