Inventor · disambiguated record
John D. Langwell
Also filed as: LANGWELL JOHN D
3 granted patents·163 citations·filing 1973–1988
76Inventor score
Top patents by PatentIndex Score
3 records- 0188US4572380APad holder adapted for multiple modes of mounting and associated methodsALEXANDER HERMAN·Filed 1983·Granted Feb 25, 1986·103 cites·36 claims
- 0275US4919377ASheet dispenser and display and holder thereforSANDY ALEXANDER INC·Filed 1988·Granted Apr 24, 1990·48 cites·22 claims
- 0343US3934317AMeans for detachable support of keys within a pocket of an article of clothingLANGWELL JOHN D·Filed 1973·Granted Jan 27, 1976·12 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →