US2847885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deep hole drill
Assignee: Cleveland Twist Drill Co
•
Filing: 1956-08-02
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Granted: 1958-08-19
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Expires: 1976-08-02
Abstract
No abstract record available.
Inventors
- 👤 William A Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:38
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/06; B23B51/063; B23B51/04; B23B51/0486; B23B2251/00; B23B2251/46; B23B51/066; Y; Y10; Y10S; Y10S408/00; Y10S408/705; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/455; Y10T408/89; Y10T408/895; Y10T408/909; Y10T408/9095; Y10T408/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |