Patent US2682075A successfully refreshed from Google Patents.
US2682075A
Expired / Lapsed
US
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Door lift mechanism
Assignee: ACF Industries Inc
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Filing: 1952-01-25
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Granted: 1954-06-29
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Expires: 1972-01-25
Abstract
No abstract record available.
Inventors
- 👤 William F Dietrichson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:42
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/003; B61D19/005; E; E05; E05D; E05D15/00; E05D15/56; E05D15/565; E05Y; E05Y2800/00; E05Y2900/00; E05Y2900/50; E05Y2900/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-28 | 1957-12-28 | 1958-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-28 | 1961-12-28 | 1962-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-28 | 1965-12-28 | 1966-06-29 | $7700.00 | Window Closed / Lapsed |