Patent US2298542A successfully refreshed from Google Patents.
US2298542A
Expired / Lapsed
US
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Door operator
Assignee: Yale and Towne Manufacturing Co
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Filing: 1940-04-09
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Granted: 1942-10-13
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Expires: 1960-04-09
Abstract
No abstract record available.
Inventors
- 👤 Robert S Potter
- 👤 Maurice D Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:45
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/22; E05F3/224; E05F15/00; E05F15/50; E05F15/53; E05F3/04; E05F3/06; E05F3/10; E05F3/102; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/404; E05Y2201/41; E05Y2201/422; E05Y2201/43; E05Y2201/448; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/3013; E05Y2400/3015; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-10-12 | 1946-04-13 | 1946-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-10-12 | 1950-04-13 | 1950-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-10-12 | 1954-04-13 | 1954-10-13 | $7700.00 | Window Closed / Lapsed |