Patent US2497683A successfully refreshed from Google Patents.
US2497683A
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Freight loading apparatus
Assignee: Evans Products Co
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Filing: 1948-09-25
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Granted: 1950-02-14
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Expires: 1968-09-25
Abstract
No abstract record available.
Inventors
- 👤 Nampa Sulo Michael
- 👤 Kenneth J Tobin
- 👤 Dunlap Henry Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
B; B61; B61D; B61D45/00; B61D45/006; B60; B60P; B60P7/00; B60P7/06; B60P7/135; B60P7/15; B61D45/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20860E
Cited
US2056704A
Cited
US2091869A
Cited
US2268394A
Cited
US2476362A
Cited
US2440437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |