US2674510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device for twin drawers
Assignee: WALRUS Manufacturing CO
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Filing: 1951-10-30
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Granted: 1954-04-06
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Expires: 1971-10-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard I Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:14
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/46; E05B65/462; E05B65/463; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0825; Y10T292/0826; Y10T292/0911; Y10T292/0937; Y10T292/0938; Y10T292/1043; Y10T292/1063; Y10T292/1064
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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |