Assignee
WALTER HANS PHILIPP
3 granted patents·88 citations·filing 1975–1979
Technology mixE21B3
Top patents by PatentIndex Score
3 records- 0170US4049065ADrilling apparatusWALTER HANS PHILIPP·Filed 1975·Granted Sep 20, 1977·36 cites·13 claims
- 0268US4043409ADrill steel for deep drill hammersWALTER HANS PHILIPP·Filed 1976·Granted Aug 23, 1977·31 cites·33 claims
- 0356US4280570ADrill hammerWALTER HANS PHILIPP·Filed 1979·Granted Jul 28, 1981·21 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →