US3664720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawer locking system
Assignee: Massey-Ferguson Industries Ltd
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Filing: 1970-09-14
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Granted: 1972-05-23
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Expires: 1990-09-14
Abstract
Abstract A LOCKING SYSTEM FOR DESK DRAWERS HAS A HORIZONTAL LOCK BAR BENEATH THE TOP AND OVERLYING DRAWERS AT THE LEFT, CENTER AND RIGHT OF THE DESK. THE LOCK BAR IS MOVABLE ON INCLINED CAM SURFACES BY A ROTARY LOCKABLE ACTUATOR. EACH DRAWER HAS A VERTICALLY SLIDABLE DETENT BIASED UPWARDLY AND SHIFTABLE DOWNWARDLY BY THE VETICAL COMPONENT OF THE INCLINED MOTION OF THE LOCKBAR.
Inventors
- 👤 Werner E Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:45
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/46; E05B65/462
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |