Patent US1917778A successfully refreshed from Google Patents.
US1917778A
Expired / Lapsed
US
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Key ejecting mechanism
Assignee: Individual
•
Filing: 1931-02-03
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Granted: 1933-07-11
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Expires: 1951-02-03
Abstract
No abstract record available.
Inventors
- 👤 Richard B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:28
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/003; Y; Y10; Y10S; Y10S70/00; Y10S70/30; Y10S70/36; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7763; Y10T70/778; Y10T70/7791; Y10T70/7876
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) | 1936-07-10 | 1937-01-09 | 1937-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-10 | 1941-01-09 | 1941-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-10 | 1945-01-09 | 1945-07-11 | $7700.00 | Window Closed / Lapsed |