Patent US2554442A successfully refreshed from Google Patents.
US2554442A
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US
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Latching device for knockout windows
Assignee: Adlake Co
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Filing: 1945-03-30
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Granted: 1951-05-22
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Expires: 1965-03-30
Abstract
No abstract record available.
Inventors
- 👤 Yale W Ehret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:42
CPC Classifications
B; B60; B60J; B60J9/00; B60J9/02; Y; Y10; Y10T; Y10T24/00; Y10T24/21; Y10T24/2143; Y10T24/2147; Y10T292/00; Y10T292/08; Y10T292/0876; Y10T292/0883
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR375443A
Cited
US1887484A
Cited
US1909111A
Cited
US2020277A
Cited
US2016519A
Cited
US2352727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |