US2985206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-disc rotary breaker and scraper
Assignee: Individual
•
Filing: 1960-04-25
•
Granted: 1961-05-23
•
Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Walter W Letts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:14
CPC Classifications
B; B23; B23Q; B23Q17/00; B23Q17/22; B23Q17/2283; B27; B27B; B27B5/00; B27B5/29; B27B5/30; B27B5/36; B27L; B27L1/00; B27L1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US179401A
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US228041A
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US327203A
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US346681A
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US972446A
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US1820445A
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US1691850A
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US2174782A
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US2490165A
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US2753901A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |