US2846902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill elements
Assignee: American Saw & Tool Co
•
Filing: 1956-02-06
•
Granted: 1958-08-12
•
Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 William E Cowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:13
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/009; B23P; B23P15/00; B23P15/28; B23P15/32; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/905; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8857
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE522458A
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US2732869A
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US676782A
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US2162117A
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US2387983A
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US2626533A
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US2655964A
Cited
US2705534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |