US2729089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid-controlled door lock
Assignee: EASTERN MALLEABLE IRON Co
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Filing: 1952-02-08
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Granted: 1956-01-03
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Expires: 1972-02-08
Abstract
No abstract record available.
Inventors
- 👤 Albert L Pelcin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:45
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0001; E05B47/0002; E05B47/06; E05B47/0607; E05C; E05C9/00; E05C9/04; E05C9/042; E05C9/048; E05B15/00; E05B15/02; E05B15/0205; E05B15/022; E05B47/0003; E05B47/0004; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0834; Y10T292/0836; Y10T292/0839; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55; Y10T70/5504; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/713
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |