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Classification Resources
 
Class   48GAS: HEATING AND ILLUMINATING
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     ACETYLENE
[List of Pre Grant Publications for class 48 subclass 61][List of Patents for class 48 subclass 61]61 GENERATORS
[List of Pre Grant Publications for class 48 subclass 119][List of Patents for class 48 subclass 119]119 RETORTS
 [List of Pre Grant Publications for class 48 subclass 127.1][List of Patents for class 48 subclass 127.1]127.1 CONVERSION OF HYDROCARBON GAS AND BLENDING OF PRODUCT WITH FURTHER HYDROCARBON GAS, PROCESS
[List of Pre Grant Publications for class 48 subclass 127.3][List of Patents for class 48 subclass 127.3]127.3 METHANE (NATURAL GAS) -CONTAINING PRODUCT, OR TREATMENT OR RECOVERY PROCESS
 [List of Pre Grant Publications for class 48 subclass 127.9][List of Patents for class 48 subclass 127.9]127.9 APPARATUS FOR CONVERTING OR TREATING HYDROCARBON GAS
[List of Pre Grant Publications for class 48 subclass 144][List of Patents for class 48 subclass 144]144 CARBURETORS
 [List of Pre Grant Publications for class 48 subclass 128][List of Patents for class 48 subclass 128]128 PURIFIERS
 [List of Pre Grant Publications for class 48 subclass 170][List of Patents for class 48 subclass 170]170 CENTER AND BY-PASS VALVES
 [List of Pre Grant Publications for class 48 subclass 173][List of Patents for class 48 subclass 173]173 EXHAUSTERS
[List of Pre Grant Publications for class 48 subclass 174][List of Patents for class 48 subclass 174]174 HOLDERS
[List of Pre Grant Publications for class 48 subclass 180.1][List of Patents for class 48 subclass 180.1]180.1 MIXERS
[List of Pre Grant Publications for class 48 subclass 190][List of Patents for class 48 subclass 190]190 DISTRIBUTION
[List of Pre Grant Publications for class 48 subclass 197R][List of Patents for class 48 subclass 197R]  197R PROCESSES
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
 
DIGESTS
 
 [List of Pre Grant Publications for class 48 subclass DIG1][List of Patents for class 48 subclass DIG1] DIG1 RECIRCULATION OF GASES PRODUCED TO LOWER PART OF FUEL BED
 [List of Pre Grant Publications for class 48 subclass DIG2][List of Patents for class 48 subclass DIG2] DIG2 SLAGGING PRODUCER
 [List of Pre Grant Publications for class 48 subclass DIG3][List of Patents for class 48 subclass DIG3] DIG3 HIGH PRESSURE
 [List of Pre Grant Publications for class 48 subclass DIG4][List of Patents for class 48 subclass DIG4] DIG4 POWDERED FUEL INJECTION
 [List of Pre Grant Publications for class 48 subclass DIG5][List of Patents for class 48 subclass DIG5] DIG5 DIFFUSION MEMBRANE FOR GAS REACTION OR SEPARATION
 [List of Pre Grant Publications for class 48 subclass DIG6][List of Patents for class 48 subclass DIG6] DIG6 UNDERGROUND GASIFICATION OF COAL
 [List of Pre Grant Publications for class 48 subclass DIG7][List of Patents for class 48 subclass DIG7] DIG7 SLURRY
 [List of Pre Grant Publications for class 48 subclass DIG8][List of Patents for class 48 subclass DIG8] DIG8 INTERNAL COMBUSTION ENGINE FOR GAS MAKING
 [List of Pre Grant Publications for class 48 subclass DIG9][List of Patents for class 48 subclass DIG9] DIG9 SOLAR GASIFICATION
 [List of Pre Grant Publications for class 48 subclass DIG10][List of Patents for class 48 subclass DIG10] DIG10 COMPUTER RESISTED CONTROL