Inventor
HANCOCK JOHN P
US14 patents
⚠️ This page may combine multiple inventors who share the name “HANCOCK JOHN P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WHIT TOOLS INC K
6 patentsUS5222369AJun 29, 1993
Refrigerant recovery device with vacuum operated check valve
WHIT TOOLS INC K33 citations91
US5317903AJun 7, 1994
Refrigerant charging system controlled by charging pressure change rate
WHIT TOOLS INC K41 citations90
US5335512AAug 9, 1994
Refrigerant recovery device
WHIT TOOLS INC K9 citations72
US5186017AFeb 16, 1993
Refrigerant recovery device
WHIT TOOLS INC K19 citations72
US5168721ADec 8, 1992
Refrigerant recovery device
WHIT TOOLS INC K16 citations72
US4255119AMar 10, 1981
Refillable gas burning lighter
WHIT TOOLS INC K8 citations71