Inventor · disambiguated record
Richard A. Spellmann
Also filed as: SPELLMANN RICHARD A
2 granted patents·77 citations·filing 1979–1982
66Inventor score
Files withCHEVRON RES2
Top patents by PatentIndex Score
2 records- 0183US4353117AMethod of diagnosing errors off-line in pipe specification files of a computer-aided graphics systemCHEVRON RES·Filed 1979·Granted Oct 5, 1982·45 cites·4 claims
- 0260US4464719AOff-line method of depicting piping items of pipe specification files of a computer-aided graphics system, without duplications occurringCHEVRON RES·Filed 1982·Granted Aug 7, 1984·32 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →