Patent US2985206A successfully refreshed from Google Patents.
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 15:08
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US179401A
Cited
US228041A
Cited
US327203A
Cited
US346681A
Cited
US972446A
Cited
US1820445A
Cited
US1691850A
Cited
US2174782A
Cited
US2490165A
Cited
US2753901A
Cited
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 |