Inventor · disambiguated record
David M. Donan
Also filed as: DONAN DAVID M
3 granted patents·102 citations·filing 1978–1983
75Inventor score
Technology areasE21D
Top patents by PatentIndex Score
3 records- 0190US4557631AOff-center rock bolt anchor and methodDONAN JR DAVID C·Filed 1983·Granted Dec 10, 1985·47 cites·7 claims
- 0287US4183699AWasher/gasket for mine roof bolt assemblyDONAN DAVID C JR·Filed 1978·Granted Jan 15, 1980·40 cites·6 claims
- 0370US4188158AMine roof bolt hole sealWAIAMEA CO INC·Filed 1978·Granted Feb 12, 1980·15 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →