Patent US2703247A successfully refreshed from Google Patents.
US2703247A
Expired / Lapsed
US
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Safety catch for overhead doors
Assignee: Frantz Manufacturing Co
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Filing: 1953-04-09
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Granted: 1955-03-01
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Expires: 1973-04-09
Abstract
No abstract record available.
Inventors
- 👤 Cecil R Wolf
- 👤 Charles E Seidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:21
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/0021; Y; Y10; Y10S; Y10S292/00; Y10S292/36; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/1043; Y10T292/1051; Y10T292/1052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1992972A
Cited
US2660765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |