P

Inventor

LEWIS RICHARD D

US7 patents
⚠️ This page may combine multiple inventors who share the name “LEWIS RICHARD D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GRACO INC

4 patents
US5176176AJan 5, 1993

Non-degrading back pressure regulator

GRACO INC10 citations69
US5222518AJun 29, 1993

Air flow control valve

GRACO INC9 citations68
US4887639ADec 19, 1989

Non-degrading pressure regulator

GRACO INC16 citations68
US4843841AJul 4, 1989

Energy conserving refrigeration device

GRACO INC6 citations61

(unassigned)

1 patent
US6026172AFeb 15, 2000

System and method for zoom lens calibration and method using same

81 citations93

LEWIS JR CLARENCE A

1 patent
US4322802AMar 30, 1982

Control apparatus for adjusting the position of a workpiece

LEWIS JR CLARENCE A31 citations89

LEWIS CLARENCE A

1 patent
US4482972ANov 13, 1984

Distance sensing apparatus and method

LEWIS CLARENCE A16 citations66