Inventor · disambiguated record
Donald W. Keefer
Also filed as: KEEFER DONALD W
8 granted patents·82 citations·filing 1983–1993
87Inventor score
Files withCLASSIC CORP8
Top patents by PatentIndex Score
8 records- 0154US4879775AReinforced rail assembly for waterbedsCLASSIC CORP·Filed 1988·Granted Nov 14, 1989·16 cites·9 claims
- 0251US4597120AWaterbed utilizing dual fluid-filled mattresses and having improved surface continuityCLASSIC CORP·Filed 1985·Granted Jul 1, 1986·19 cites·14 claims
- 0337US5345628AWaterbed mattress with tethered wave motion-inhibiting insertsCLASSIC CORP·Filed 1993·Granted Sep 13, 1994·11 cites·15 claims
- 0437US4506397AWaterbed constructionCLASSIC CORP·Filed 1983·Granted Mar 26, 1985·10 cites·16 claims
- 0534US4771491AReinforced wall soft side waterbedCLASSIC CORP·Filed 1987·Granted Sep 20, 1988·7 cites·23 claims
- 0634US4521929AHeated waterbedCLASSIC CORP·Filed 1984·Granted Jun 11, 1985·8 cites·14 claims
- 0731US4715076AWaterbed motion reduction and hydraulic enhancement systemCLASSIC CORP·Filed 1985·Granted Dec 29, 1987·5 cites·17 claims
- 0825US4688284AWave dampened waterbedCLASSIC CORP·Filed 1986·Granted Aug 25, 1987·6 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →