Patent US2790668A successfully refreshed from Google Patents.
US2790668A
Expired / Lapsed
US
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Strike plate
Assignee: Individual
•
Filing: 1956-02-17
•
Granted: 1957-04-30
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Expires: 1976-02-17
Abstract
No abstract record available.
Inventors
- 👤 Friedman Philip
- 👤 George J Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:34
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/24; E05B63/244; Y; Y10; Y10T; Y10T292/00; Y10T292/68; Y10T292/696
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |