Patent US2948309A successfully refreshed from Google Patents.
US2948309A
Expired / Lapsed
US
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Chain saw bar construction
Assignee: Hoffco Inc
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Filing: 1955-04-26
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Granted: 1960-08-09
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Expires: 1975-04-26
Abstract
No abstract record available.
Inventors
- 👤 Harry J Hoff
- 👤 Stephen J Hoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:49
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/02; B27B17/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1397026A
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US2165524A
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DE728639C
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US2316997A
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US2359230A
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US2622636A
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US2693206A
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US2728566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |