PATENTS REINSTATED DUE TO THE ACCEPTANCE OF A LATE
                         MAINTENANCE FEE FROM 06/23/95

Patent Number   Serial Number     Filing Date    Issue Date   Granted Date

Re. 34,486       07/772,389        10/07/91       12/21/93        06/30/95
4,363,580        06/281,778        07/09/81       12/14/82        06/26/95
4,528,442        06/614,387        05/25/84       07/09/85        06/30/95
4,535,597        06/573,679        01/25/84       08/20/85        06/23/95
4,605,701        06/662,726        10/19/84       08/12/86        06/23/95
4,610,972        06/601,685        04/18/84       09/09/86        06/27/95
4,660,336        06/807,376        12/10/85       04/28/87        06/30/95
4,853,780        07/154,881        02/11/88       08/01/89        06/23/95
4,898,504        07/277,778        11/30/88       02/06/90        06/30/95
4,906,093        07/222,403        07/21/88       03/06/90        06/27/95
4,953,553        07/350,500        05/11/89       09/04/90        06/26/95
4,968,265        07/374,622        06/29/89       11/06/90        06/27/95
4,969,251        07/338,890        04/17/89       11/13/90        06/27/95
4,974,288        07/469,081        01/23/90       12/04/90        06/29/95
4,978,658        07/257,723        10/14/88       12/18/90        06/27/95
4,989,256        07/215,583        07/06/88       01/29/91        06/29/95
4,997,827        07/321,083        03/09/89       03/05/91        06/30/95
5,002,672        07/532,261        06/01/90       03/26/91        06/29/95
5,007,828        07/476,734        02/08/90       04/16/91        06/27/95

              PATENTS REINSTATED DUE TO THE ACCEPTANCE OF A LATE
                         MAINTENANCE FEE FROM 07/07/95

Patent Number   Serial Number     Filing Date    Issue Date   Granted Date

4,371,498        06/275,419        06/19/81       02/01/83        07/14/95
4,515,167        06/470,196        02/28/83       05/07/85        07/13/95
4,522,072        06/487,731        04/22/83       06/11/85        07/14/95
4,588,633        06/728,806        04/29/85       05/13/86        07/14/95
4,630,302        06/762,309        08/02/85       12/16/86        07/14/95
4,640,017        06/905,291        09/08/86       02/03/87        07/13/95
4,821,397        07/070,251        07/06/87       04/18/89        07/12/95
4,822,119        07/119,545        11/12/87       04/18/89        07/14/95
4,828,262        07/059,526        06/08/87       05/09/89        07/14/95
4,831,749        07/227,315        08/02/88       05/23/89        07/14/95
4,834,068        07/169,742        03/18/88       05/30/89        07/14/95
4,840,711        07/036,202        04/08/87       06/20/89        07/14/95
4,846,950        07/096,804        09/10/87       07/11/89        07/14/95
4,853,150        07/133,635        12/16/87       08/01/89        07/14/95
4,859,584        06/925,429        10/31/86       08/22/89        07/14/95
4,892,138        07/303,323        01/30/89       01/09/90        07/14/95
4,909,303        07/262,844        10/26/88       03/20/90        07/14/95
4,913,356        07/296,442        01/12/89       04/03/90        07/14/95
4,951,250        07/272,973        11/18/88       08/21/90        07/12/95
4,953,828        07/347,037        05/04/89       09/04/90        07/14/95
4,959,833        07/321,528        03/08/89       09/25/90        07/14/95
4,962,777        06/736,645        05/21/85       10/16/90        07/14/95
4,966,451        07/333,613        04/05/89       10/30/90        07/14/95
4,967,673        07/285,503        12/16/88       11/06/90        07/14/95
5,004,100        07/503,703        04/03/90       04/02/91        07/14/95
5,010,223        07/358,809        05/31/89       04/23/91        07/14/95

              PATENTS REINSTATED DUE TO THE ACCEPTANCE OF A LATE
                         MAINTENANCE FEE FROM 07/14/95

Patent Number   Serial Number     Filing Date    Issue Date   Granted Date

4,513,194        06/244,153        03/16/81       04/23/85        07/20/95
4,563,777        06/627,656        07/03/84       01/14/86        07/20/95
4,571,219        06/357,842        03/15/82       02/18/86        07/18/95
4,584,639        06/565,194        12/23/83       04/22/86        07/24/95
4,620,955        06/832,752        02/25/86       11/04/86        07/20/95
4,646,672        06/567,228        12/30/83       03/03/87        07/24/95
4,650,573        06/691,058        01/14/85       03/17/87        07/20/95
4,779,655        07/050,683        05/18/87       10/25/88        07/20/95
4,832,602        07/151,365        02/02/88       05/23/89        07/20/95
4,854,318        07/135,146        12/18/87       08/08/89        07/20/95
4,876,475        07/187,149        04/28/88       10/24/89        07/20/95
4,880,212        07/225,620        07/26/88       11/14/89        07/18/95
4,883,097        06/904,028        09/04/86       11/28/89        07/20/95
4,967,867        07/428,064        10/27/89       11/06/90        07/20/95
4,975,239        07/300,012        01/23/89       12/04/90        07/19/95
4,975,556        07/285,591        12/16/88       12/04/90        07/21/95
4,995,053        07/514,181        04/25/90       02/19/91        07/20/95
4,996,110        06/897,951        08/19/86       02/26/91        07/20/95
5,004,553        07/421,751        10/16/89       04/02/91        07/20/95
5,012,220        07/416,957        10/04/89       04/30/91        07/20/95