Patent US3207546A successfully refreshed from Google Patents.
US3207546A
Expired / Lapsed
US
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Door lock devices
Assignee: Individual
•
Filing: 1963-10-07
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Granted: 1965-09-21
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Expires: 1983-10-07
Abstract
No abstract record available.
Inventors
- 👤 Ernest Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:21
CPC Classifications
E; E05; E05B; E05B85/00; E05B85/20; E05B85/24; E05B85/28; Y; Y10; Y10T; Y10T292/00; Y10T292/03; Y10T292/68; Y10T292/688; Y10T292/691
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
IN A KEEPER STRUCTURE HAVING A GENERAL C-SHAPED FRAME ADAPTED TO BE MOUNTED ON A SUPPORTING BODY AND INCLUDING SPACED UPPER AND LOWER GENERALLY HORIZONTAL ARMS PROVIDING AN OPENING CLOSED AT ONE SIDE BY A GENERALLY VERTICAL PORTION RIGIDLY INTERCONNECTING SAID ARMS, A WEDGE PROJECTING INTO SAID OPENING AND MOVABLE ALONG ONE OF SAID ARMS, AND TEETH ON SAID OTHER ARM PROJECTING INTO SAID OPENING TOWARD SAID WEDGE, THE COMBINATION THEREWITH OF A LEAF SPRING IN SAID OPENING HAVING A FIRST PORTION SUBSTANTIALLY FIXED WITH RESPECT TO SAID FRAME AND A SPRING ARM ENGAGING SAID WEDGE TO RESIST INWARD MOVEMENT OF SAID WEDGE ALONG SAID ONE OF SAID ARMS.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |