Assignee
WELKER ROBERT H
9 granted patents·182 citations·filing 1974–1988
Top patents by PatentIndex Score
9 records- 0188US4177676ASensor positioning apparatusWELKER ROBERT H·Filed 1978·Granted Dec 11, 1979·42 cites·7 claims
- 0287US4346611AInsertion regulator for pressurized pipelinesWELKER ROBERT H·Filed 1980·Granted Aug 31, 1982·52 cites·13 claims
- 0380US4172670ALiquid sample collection apparatusWELKER ROBERT H·Filed 1978·Granted Oct 30, 1979·29 cites·8 claims
- 0470US3945770AHigh pressure pumpWELKER ROBERT H·Filed 1974·Granted Mar 23, 1976·21 cites·9 claims
- 0556US4351510AFlow regulator assemblyWELKER ROBERT H·Filed 1980·Granted Sep 28, 1982·16 cites·4 claims
- 0651US4315616ADump valveWELKER ROBERT H·Filed 1980·Granted Feb 16, 1982·14 cites·10 claims
- 0735US4354661AConstant velocity diffuserWELKER ROBERT H·Filed 1980·Granted Oct 19, 1982·5 cites·9 claims
- 0834US4224629ADisc chart paper with reinforced separating edgeWELKER ROBERT H·Filed 1979·Granted Sep 23, 1980·1 cites·10 claims
- 0931US4830334AResilient plug construction for a flow regulator incorporating stress limiting meansWELKER ROBERT H·Filed 1988·Granted May 16, 1989·2 cites·13 claims
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