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Inventor
SPEECHLEY RICHARD E
US
3 patents
⚠️ This page may combine multiple inventors who share the name “SPEECHLEY RICHARD E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PHILADELPHIA GEAR CORP
2 patents
US4249863A
Feb 10, 1981
Surface aerator impeller
PHILADELPHIA GEAR CORP
9 citations
70
US4163631A
Aug 7, 1979
Surface aerator impeller
PHILADELPHIA GEAR CORP
7 citations
70
CONNOLLY JOHN R
1 patent
US4334826A
Jun 15, 1982
Surface aerator impeller
CONNOLLY JOHN R
20 citations
75