Patent US2992056A successfully refreshed from Google Patents.
US2992056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device for file cabinets
Assignee: AT&T Inc
•
Filing: 1958-01-17
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Granted: 1961-07-11
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Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Henry J Thielker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:42
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/46; E05B65/462; E05B65/463; E05B65/465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1432559A
Cited
US2240067A
Cited
US2564039A
Cited
US2719770A
Cited
US2827353A
Cited
US2842419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |