Patent US2427909A successfully refreshed from Google Patents.
US2427909A
Expired / Lapsed
US
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Locking device
Assignee: Individual
•
Filing: 1944-09-13
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Granted: 1947-09-23
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Expires: 1964-09-13
Abstract
No abstract record available.
Inventors
- 👤 Edward N Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:10
CPC Classifications
E; E05; E05C; E05C9/00; E05C9/04; E05C9/043; E05B; E05B65/00; E05B65/0021; E05C9/047; E05C9/048; Y; Y10; Y10T; Y10T292/00; Y10T292/88; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5792; Y10T70/5796
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) | 1950-09-22 | 1951-03-24 | 1951-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-22 | 1955-03-24 | 1955-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-22 | 1959-03-24 | 1959-09-23 | $7700.00 | Window Closed / Lapsed |