US3605459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door-lock
Assignee: Government of Netherlands
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Filing: 1969-12-11
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Granted: 1971-09-20
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Expires: 1989-12-11
Abstract
Abstract A DOOR JAMB AND A DOOR WITHOUT A HANDLE OR KEYHOLE CONTAINING A LOCK, WHICH MAY BE A MAGNETICALLY OPERATED TUMBLER TYPE LOCK OPERATED BY A MAGNETIC KEY, WHICH WHEN PRESSED AGAINST SAID DOOR ADJACENT SAID LOCK, AND MECHANICAL MEANS IN THE DOOR INITIATED BY PRESSING THE DOOR TOWARDS IT JAMB TO MOVE THE RELATIVE PARTS OF SAID LOCK TO OPERATE AND RETRACT THE LATCH FOR THE DOOR AND RETAIN IT RETRACTED UNTIL THE DOOR IS OPENED BY A SPRING URGED PIN NORMALLY PRESSING AGAINST THE DOOR JAMB.
Inventors
- 👤 Christiaan Johannes Van Dalen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:58
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0038; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1021; Y10T292/54; Y10T292/558; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7124; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/752; Y10T70/7531; Y10T70/778; Y10T70/7791; Y10T70/7904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |