Patent US3059491A successfully refreshed from Google Patents.
US3059491A
Expired / Lapsed
US
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Saw chain drive sprocket
Assignee: Hoffco Inc
•
Filing: 1958-08-11
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Granted: 1962-10-23
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Expires: 1978-08-11
Abstract
No abstract record available.
Inventors
- 👤 Harry J Hoff
- 👤 Stephen J Hoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:04
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/08; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19921; Y10T74/19926; Y10T74/19935; Y10T83/00; Y10T83/707
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US820789A
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US988106A
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US985905A
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US1004980A
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US1393886A
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GB231366A
Cited
US2575582A
Cited
US2673471A
Cited
US2799174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |