US2760255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw conveyor and manufacture thereof
Assignee: Individual
•
Filing: 1951-05-26
•
Granted: 1956-08-28
•
Expires: 1971-05-26
Abstract
No abstract record available.
Inventors
- 👤 Charles E Compton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:06
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/26; B65; B65G; B65G33/00; B65G33/24; B65G33/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49826; Y10T29/49838
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2496764A
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US2542913A
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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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |