US2557028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key-operable permutation lock
Assignee: DEUTSCH LOCK Co
•
Filing: 1946-02-09
•
Granted: 1951-06-12
•
Expires: 1966-02-09
Abstract
No abstract record available.
Inventors
- 👤 Leo E Deutsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:31
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/22; E05B67/24; E05B27/00; E05B27/02; E05B27/08; E05B27/086; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/459; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7638; Y10T70/765; Y10T70/7667; Y10T70/7689; Y10T70/7695; Y10T70/7729; Y10T70/774; Y10T70/778; Y10T70/7791; Y10T70/7881; Y10T70/7893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US180255A
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US1384392A
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US2019399A
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US1998900A
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US2019400A
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US2090114A
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US2170205A
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US2325310A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |