Patent US2497957A successfully refreshed from Google Patents.
US2497957A
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Window frame
Assignee: Beechcraft Corp
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Filing: 1946-04-05
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Granted: 1950-02-21
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Expires: 1966-04-05
Abstract
No abstract record available.
Inventors
- 👤 Perry H Pelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:07
CPC Classifications
B; B64; B64C; B64C1/00; B64C1/14; B64C1/1476; B64C1/1492; B60; B60J; B60J1/00; B60J1/08; E; E06; E06B; E06B3/00; E06B3/54; E06B3/58; E06B3/62; E06B3/6205; E06B2003/6217; E06B2003/6223; E06B2003/6226; Y; Y10; Y10T; Y10T292/00; Y10T292/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2205538A
Cited
US2358485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |