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US2487500A
Expired / Lapsed
US
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Conveyer chain
Assignee: Jervis B Webb Co
•
Filing: 1943-10-22
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Granted: 1949-11-08
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Expires: 1963-10-22
Abstract
No abstract record available.
Inventors
- 👤 Jervis B Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:00
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/30; B65G17/38; B65G2201/00; B65G2201/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US850704A
Cited
US1122831A
Cited
US1082332A
Cited
US1453088A
Cited
US1979592A
Cited
US2229106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |