US2544239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Garage door operating device
Assignee: National Pneumatic Co Inc
•
Filing: 1945-08-27
•
Granted: 1951-03-06
•
Expires: 1965-08-27
Abstract
No abstract record available.
Inventors
- 👤 Cyrus T Schirmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:55
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/681; E05F15/684; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/644; E05Y2201/646; E05Y2800/00; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1324587A
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US1519749A
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US1544542A
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US1962475A
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US1916652A
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US2221039A
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US2401082A
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US2430729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |