US2208623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical servo device
Assignee: RCA Corp
•
Filing: 1939-03-31
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Granted: 1940-07-23
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Expires: 1959-03-31
Abstract
No abstract record available.
Inventors
- 👤 Donald S Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:55
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1409
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) | 1943-07-23 | 1944-01-22 | 1944-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-23 | 1948-01-22 | 1948-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-23 | 1952-01-22 | 1952-07-23 | $7700.00 | Window Closed / Lapsed |