Inventor · disambiguated record
Donald R. Spaman
Also filed as: SPAMAN DONALD R
3 granted patents·28 citations·filing 1976–1988
69Inventor score
Technology areasG11B
Files withRAYMOND ENGINEERING3
Top patents by PatentIndex Score
3 records- 0156US4847727AMagnetic memory disc purge erase apparatusRAYMOND ENGINEERING·Filed 1986·Granted Jul 11, 1989·12 cites·24 claims
- 0254US4095146AReel-to-reel drive with speed controlRAYMOND ENGINEERING·Filed 1976·Granted Jun 13, 1978·9 cites·18 claims
- 0341US4832283ATape transport cartridgeRAYMOND ENGINEERING·Filed 1988·Granted May 23, 1989·7 cites·21 claims
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