US2963140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barrel type conveyor apparatus
Assignee: Frederic B Stevens Inc
•
Filing: 1957-09-09
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Granted: 1960-12-06
•
Expires: 1977-09-09
Abstract
No abstract record available.
Inventors
- 👤 Barton James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:30
CPC Classifications
B; B65; B65G; B65G49/00; B65G49/02; B65G49/04; B65G49/0409; B65G49/0436; B65G49/044; B65G49/045; B65G49/0454; B65G49/0463
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1895622A
Cited
US2148552A
Cited
US2177982A
Cited
US2187079A
Cited
GB562153A
Cited
US2456185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |