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Patent US2711199A successfully refreshed from Google Patents.
US2711199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill extension
Assignee: Individual
•
Filing: 1952-06-13
•
Granted: 1955-06-21
•
Expires: 1972-06-13
Abstract
No abstract record available.
Inventors
- 👤 Oscar B Salsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:00
CPC Classifications
B; B27; B27C; B27C3/00; B27C3/08; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/665
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1315806A
Cited
US1091511A
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US1297034A
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US1408802A
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US1866714A
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US1912658A
Cited
US2291729A
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US2357773A
Cited
US2501217A
Cited
US2571589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |