US2469592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device
Assignee: Celanese Corp
•
Filing: 1948-02-06
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Granted: 1949-05-10
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Expires: 1968-02-06
Abstract
No abstract record available.
Inventors
- 👤 Byer John Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:10
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; G09F3/03; G09F3/0305; G09F3/0347; G09F3/0352; E; E05; E05B; E05B67/00; E05B67/38; E05B67/383; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T292/00; Y10T292/48; Y10T292/51; Y10T70/00; Y10T70/40; Y10T70/402; Y10T70/50; Y10T70/5009; Y10T70/5031; Y10T70/5035; Y10T70/504; Y10T70/5611
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) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |