US2497069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo system testing
Assignee: Individual
•
Filing: 1946-01-15
•
Granted: 1950-02-14
•
Expires: 1966-01-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Carpenter
- 👤 Donald M Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:32
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US504056A
Cited
US1368755A
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US1560435A
Cited
US2413847A
Cited
US2237919A
Cited
US2419210A
Cited
US2422180A
Cited
US2468635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |