Inventor · disambiguated record

Donald A. Shafer

Also filed as: SHAFER DONALD A

2 granted patents·9 citations·filing 1985–1985

51Inventor score

Technology areasC25D

Files withHALLMARK CARDS2

Top patents by PatentIndex Score

2 records

0144US4659446AApparatus for electroplating printing cylindersHALLMARK CARDS·Filed 1985·Granted Apr 21, 1987·8 cites·6 claims
0222US4647354AProtectors for printing cylinder shafts or the likeHALLMARK CARDS·Filed 1985·Granted Mar 3, 1987·1 cites·16 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →