US2936736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handle for percussive drill
Assignee: Phillips Drill Co Inc
•
Filing: 1957-09-03
•
Granted: 1960-05-17
•
Expires: 1977-09-03
Abstract
No abstract record available.
Inventors
- 👤 Frank A Werstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:05
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/04; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17042; Y10T279/17085; Y10T403/00; Y10T403/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US606970A
Cited
US856733A
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US1968055A
Cited
US2401794A
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US2399939A
Cited
US2498963A
Cited
US2794622A
Cited
US2801614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |