Patent JPS5616731A successfully refreshed from Google Patents.
Patent US2769494A successfully refreshed from Google Patents.
US2769494A
Expired / Lapsed
US
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Balanced-force rotary-cutting mechanism
Assignee: Individual
•
Filing: 1954-06-24
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Granted: 1956-11-06
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Expires: 1974-06-24
Abstract
No abstract record available.
Inventors
- 👤 William A Spurrier
- 👤 Russell K Regler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:32
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/01; B26D1/12; B26D1/14; B26D1/24; B26D1/245; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/21; Y10T83/2103; Y10T83/2113; Y10T83/2116; Y10T83/222; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4836
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US310534A
Cited
US459920A
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US595092A
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US740201A
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US840592A
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US801916A
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US1866941A
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US1804642A
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US2039831A
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US2241395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |