US2547818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operator-supported power drill
Assignee: Individual
•
Filing: 1946-11-02
•
Granted: 1951-04-03
•
Expires: 1966-11-02
Abstract
No abstract record available.
Inventors
- 👤 Everett P Gould
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:52
CPC Classifications
B; B27; B27C; B27C3/00; B27C3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1475153A
Cited
US1657514A
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CH173126A
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US2109069A
Cited
US2207219A
Cited
US2256583A
Cited
US2192468A
Cited
GB549472A
Cited
US2318166A
Cited
US2434089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |