Patent US2960884A successfully refreshed from Google Patents.
US2960884A
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US
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Rounded tooth tips for pointed rotoid teeth
Assignee: HILL ENTERPRISES Inc
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Filing: 1954-11-30
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Granted: 1960-11-22
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Expires: 1974-11-30
Abstract
No abstract record available.
Inventors
- 👤 Francis A Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:59
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/08; F16H2055/0893; Y; Y10; Y10S; Y10S8/00; Y10S8/10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19963; Y10T74/19972
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191509359A
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US1682563A
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US1538328A
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US2031888A
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US2091317A
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US2209201A
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US2222515A
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US2389728A
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US2578187A
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FR993181A
Cited
US2666336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |