Inventor
FOSTER JOHN R
US14 patents
⚠️ This page may combine multiple inventors who share the name “FOSTER JOHN R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
(unassigned)
8 patentsUS6625925B1Sep 30, 2003
Landscape edging
45 citations91
USD472984SApr 8, 2003
Interconnectable landscape edging module
27 citations91
USD463868SOct 1, 2002
Interconnectable landscape edging module
15 citations91
USD455504SApr 9, 2002
Interconnectable landscape edging module
14 citations91
US6421930B1Jul 23, 2002
Piston ring locating system
12 citations72
US5882250AMar 16, 1999
Valve refacing tool
7 citations72
US5749774AMay 12, 1998
Valve refacing tool
13 citations72
US6427301B1Aug 6, 2002
Piston ring compressor tool system
6 citations61
VON DUPRIN INC
4 patentsUS4305612ADec 15, 1981
Apparatus for operating a door latching and unlatching device
VON DUPRIN INC62 citations94
US4427223AJan 24, 1984
Latching device
VON DUPRIN INC40 citations89
US4466643AAug 21, 1984
Dogging device, method of forming the same, and an adapter kit therefor
VON DUPRIN INC17 citations71
US4401330AAug 30, 1983
Means for, and a method of, securing a closure
VON DUPRIN INC1 citations42