Patent US2758569A successfully refreshed from Google Patents.
US2758569A
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Pneumatically powered tool
Assignee: SHERWOOD C UNKEFER
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Filing: 1955-05-31
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Granted: 1956-08-14
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Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Elmer T Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:39
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/004; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1529; Y10T74/1532; Y10T74/1537; Y10T74/1558; Y10T74/1584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |