US2417820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-measuring bridge
Assignee: Sperry Gyroscope Co Inc
•
Filing: 1943-11-03
•
Granted: 1947-03-25
•
Expires: 1963-11-03
Abstract
No abstract record available.
Inventors
- 👤 Edward L Ginzton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
G; G01; G01R; G01R21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1121835A
Cited
US1590420A
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US1791563A
Cited
US2005986A
Cited
US1957454A
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US2140364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-24 | 1950-09-23 | 1951-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-24 | 1954-09-23 | 1955-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-24 | 1958-09-23 | 1959-03-25 | $7700.00 | Window Closed / Lapsed |