Inventor · disambiguated record
David P. Marshall
Also filed as: MARSHALL DAVID · MARSHALL DAVID P
7 granted patents·209 citations·filing 1974–1997
88Inventor score
Top patents by PatentIndex Score
7 records- 0192USD379970SCover for electrical boxesTHE LAMSON & SESSIONS CO·Filed 1994·Granted Jun 17, 1997·43 cites·1 claims
- 0288USD379176SCover for electrical boxesTHE LAMSON & SESSIONS CO·Filed 1994·Granted May 13, 1997·34 cites·1 claims
- 0383USD378913SCover for electrical boxesTHE LAMSON & SESSIONS CO·Filed 1994·Granted Apr 22, 1997·25 cites·1 claims
- 0471US5417019APassthrough device with firestopLAMSON & SESSIONS CO·Filed 1993·Granted May 23, 1995·38 cites·19 claims
- 0568US5866845AElectrical boxLAMSON & SESSIONS CO·Filed 1997·Granted Feb 2, 1999·34 cites·23 claims
- 0661US4807831ACombination boundary layer control system for high altitude aircraftUS AIR FORCE·Filed 1987·Granted Feb 28, 1989·22 cites·20 claims
- 0753US3931944AThrust reversal system for jet aircraft enginesLUCAS AEROSPACE LTD·Filed 1974·Granted Jan 13, 1976·13 cites·7 claims
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