Patent US3559429A successfully refreshed from Google Patents.
US3559429A
Expired / Lapsed
US
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Dual control conversion locking mechanism
Assignee: Individual
•
Filing: 1969-01-31
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Granted: 1971-02-02
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Expires: 1989-01-31
Abstract
Abstract A LOCKING MECHANISM FOR A FILE CABINET OR THE LIKE, THE DEVICE COMPRISING A PLURALITY OF INDIVIDUAL LOCK UNITS, EACH ONE OF WHICH PREVENTS ACCESS FOR GAINING REACH TO A SECOND LOCK WITHOUT FIRST OPENING UP A FIRST LOCK POSITIONED IN FRONT OF THE OTHER
Inventors
- 👤 Robert Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:46
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/38; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/487; Y10T70/491; Y10T70/493; Y10T70/498; Y10T70/50; Y10T70/5093; Y10T70/5128
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |