Patent US2686941A successfully refreshed from Google Patents.
US2686941A
Expired / Lapsed
US
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Refrigerated warehouse door and hinge construction
Assignee: Individual
•
Filing: 1950-10-04
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Granted: 1954-08-24
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Expires: 1970-10-04
Abstract
No abstract record available.
Inventors
- 👤 Walter E Patten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
F; F25; F25D; F25D23/00; F25D23/02; F25D23/028; E; E05; E05D; E05D7/00; E05D7/08; E05D7/081; E05D7/10; E05D7/1005; E05D7/1022; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/1041; E05F1/105; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/102; F25D2323/00; F25D2323/02; F25D2323/024
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) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |