Inventor · disambiguated record
John Hirst Walker
Also filed as: WALKER JOHN H · WALKER JOHN HIRST
5 granted patents·57 citations·filing 1974–1977
78Inventor score
Technology areasE21D
Files withDOWTY MINING EQUIPMENT LTD5
Top patents by PatentIndex Score
5 records- 0183US4010618AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1975·Granted Mar 8, 1977·30 cites·23 claims
- 0260US4027489AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1976·Granted Jun 7, 1977·11 cites·10 claims
- 0348US4132081AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1977·Granted Jan 2, 1979·6 cites·8 claims
- 0442US3952525AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1974·Granted Apr 27, 1976·10 cites·19 claims
- 0529US4126002AMine roof supportDOWTY MINING EQUIPMENT LTD·Filed 1977·Granted Nov 21, 1978·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →