CA684169A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Selective drilling and percussion assembly
Assignee: MARK MERIAM
•
Filing: 1957-10-10
•
Granted: 1964-04-14
•
Expires: 1977-10-10
Abstract
No abstract record available.
Inventors
- 👤 J. Gapstur John
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-07 05:51
CPC Classifications
B; B25; B25D; B25D16/00; B25D2211/00; B25D2211/06; B25D2211/062; B25D2211/064; B25D2250/00; B25D2250/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.