US2916951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic mechanism for retracting diamond boring tool
Assignee: Olofsson Corp
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Filing: 1957-01-28
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Granted: 1959-12-15
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Expires: 1977-01-28
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Carlson
- 👤 Charles J Pryor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:11
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/172; Y10T408/81; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8588; Y10T408/85884; Y10T82/00; Y10T82/12; Y10T82/125; Y10T82/128
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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |