Inventor · disambiguated record
David B. Spruill
Also filed as: SPRUILL DAVID B
3 granted patents·310 citations·filing 1986–1990
79Inventor score
Top patents by PatentIndex Score
3 records- 0193US4687008AFilter cigarettePHILIP MORRIS INC·Filed 1986·Granted Aug 18, 1987·178 cites·35 claims
- 0284US5037459ADevice for controlling relative humidity within a substantially sealed containerPHILIP MORRIS MANAGEMENT CORP·Filed 1990·Granted Aug 6, 1991·77 cites·26 claims
- 0371US5035731ADevice for controlling relative humidity within a substantially sealed containerPHILIP MORRIS MANAGEMENT CORP·Filed 1990·Granted Jul 30, 1991·55 cites·26 claims
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