US1693806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical system
Assignee: RCA Corp
•
Filing: 1925-02-28
•
Granted: 1928-12-04
•
Expires: 1945-02-28
Abstract
No abstract record available.
Inventors
- 👤 Walter G Cady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:51
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/04; H; H03; H03H; H03H9/00; H03H9/46; H03H9/48; Y; Y10; Y10S; Y10S84/00; Y10S84/21
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) | 1931-12-04 | 1932-06-04 | 1932-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-12-04 | 1936-06-04 | 1936-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-12-04 | 1940-06-04 | 1940-12-04 | $7700.00 | Window Closed / Lapsed |