Inventor · disambiguated record
John M. Marshall
Also filed as: MARSHALL JOHN M
8 granted patents·287 citations·filing 1975–2000
88Inventor score
Top patents by PatentIndex Score
8 records- 0177US3990257AMethod for cooling workpieces in a liquid bathINLAND STEEL CO·Filed 1975·Granted Nov 9, 1976·15 cites·10 claims
- 0274US5211628ASyringe with automatic retracting needleMARSHALL JOHN M·Filed 1991·Granted May 18, 1993·181 cites·3 claims
- 0368US6524284B1Medical injection patchFiled 2000·Granted Feb 25, 2003·42 cites·6 claims
- 0459US4253644AFluid closure for and method of preventing flow through an opening in a fluid and particulate confining and conveying structureINLAND STEEL CO·Filed 1978·Granted Mar 3, 1981·13 cites·22 claims
- 0556US4848138AWindow gas monitorMARSHALL JOHN M·Filed 1988·Granted Jul 18, 1989·18 cites·9 claims
- 0633US4020818AOil pressure delay check valve and pressure switch for shutting off diesel engine upon drop in oil pressureCONTROLLED POWER PRODUCTS COMP·Filed 1975·Granted May 3, 1977·8 cites·10 claims
- 0730US4633233AWindow security deviceMARSHALL JOHN M·Filed 1985·Granted Dec 30, 1986·4 cites·2 claims
- 0829US4755800AWindow security deviceMARSHALL JOHN M·Filed 1987·Granted Jul 5, 1988·6 cites·4 claims
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