Assignee
RICHMOND MFG CO
8 granted patents·203 citations·filing 1974–1975
Top patents by PatentIndex Score
8 records- 0185US4013134APortable earth boring machine with steering headRICHMOND MFG CO·Filed 1974·Granted Mar 22, 1977·65 cites·14 claims
- 0266US3939926APortable earth boring machineRICHMOND MFG CO·Filed 1974·Granted Feb 24, 1976·30 cites·8 claims
- 0364US4042046ADirectional control mechanism for underground driven pipes and conduitsRICHMOND MFG CO·Filed 1974·Granted Aug 16, 1977·35 cites·1 claims
- 0464US3938597APortable earth boring machineRICHMOND MFG CO·Filed 1974·Granted Feb 17, 1976·26 cites·8 claims
- 0559US3945443ASteerable rock boring head for earth boring machinesRICHMOND MFG CO·Filed 1974·Granted Mar 23, 1976·25 cites·6 claims
- 0639US4042043APortable earth boring machineRICHMOND MFG CO·Filed 1975·Granted Aug 16, 1977·10 cites·2 claims
- 0737US4047578APortable earth boring machineRICHMOND MFG CO·Filed 1975·Granted Sep 13, 1977·8 cites·2 claims
- 0831US4047582APortable earth boring machineRICHMOND MFG CO·Filed 1975·Granted Sep 13, 1977·4 cites·2 claims
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