Patent US3839657A successfully refreshed from Google Patents.
Patent US2708552A successfully refreshed from Google Patents.
US2708552A
Expired / Lapsed
US
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Refuse cutting machine
Assignee: F W ROBERTS MANUFACTURING Co
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Filing: 1952-04-03
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Granted: 1955-05-17
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Expires: 1972-04-03
Abstract
No abstract record available.
Inventors
- 👤 Charles B Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:39
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; Y; Y10; Y10T; Y10T83/00; Y10T83/768; Y10T83/7809
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US387438A
Cited
US529796A
Cited
US2141662A
Cited
US2171949A
Cited
US2471356A
Cited
US2554071A
Cited
US2670774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |