US2653045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric door lock
Assignee: Individual
•
Filing: 1950-04-25
•
Granted: 1953-09-22
•
Expires: 1970-04-25
Abstract
No abstract record available.
Inventors
- 👤 Pinderhughes William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:58
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/06; E05B47/0607; E05B77/00; E05B77/46; E05B77/48; E05B47/0001; E05B47/0002; E05B2047/0007; E05B47/0003; E05B47/0004; E05B81/00; E05B81/02; E05B81/04; E05B81/08; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/0982; Y10T292/0985; Y10T292/1014; Y10T292/1022; Y10T292/1028; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7113; Y10T70/713
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US805437A
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US914670A
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GB191508060A
Cited
US1554839A
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US2028852A
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US1992729A
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US2061978A
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US2082806A
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GB491024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |