US2544305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple key locking system
Assignee: General Electric Co
•
Filing: 1948-07-28
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Granted: 1951-03-06
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Expires: 1968-07-28
Abstract
No abstract record available.
Inventors
- 👤 Christian J Finke
- 👤 Miguel A Guzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:47
CPC Classifications
E; E05; E05B; E05B35/00; E05B35/08; E05B35/12; Y; Y10; Y10S; Y10S70/00; Y10S70/60; Y10T; Y10T70/00; Y10T70/60; Y10T70/625; Y10T70/675; Y10T70/70; Y10T70/7441; Y10T70/7446; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7565
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) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |