US2490381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevating conveyer
Assignee: Individual
•
Filing: 1946-05-21
•
Granted: 1949-12-06
•
Expires: 1966-05-21
Abstract
No abstract record available.
Inventors
- 👤 James J Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:21
CPC Classifications
B; B65; B65G; B65G37/00; B65G2812/00; B65G2812/01; B65G2812/016; B65G2812/018
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US351190A
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US2343133A
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US955264A
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US1591347A
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US1624703A
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DE449391C
Cited
US2022145A
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US2033234A
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US2078379A
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US2077000A
Cited
US2251667A
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US2362697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |