Patent US3443339A successfully refreshed from Google Patents.
US3443339A
Expired / Lapsed
US
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Release mechanism for garage door connecting arm
Assignee: Chamberlain Manufacturing Corp
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Filing: 1967-03-07
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Granted: 1969-05-13
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Expires: 1987-03-07
Abstract
No abstract record available.
Inventors
- 👤 Richard Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:22
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/681; E05F15/684; E05Y; E05Y2800/00; E05Y2900/00; E05Y2900/10; E05Y2900/106; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5159
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US832420A
Cited
US2544239A
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US2589479A
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US2982541A
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US3264785A
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US3254699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |