US2521905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque and speed indicator
Assignee: CONTROL INSTR CO Inc
•
Filing: 1945-02-14
•
Granted: 1950-09-12
•
Expires: 1965-02-14
Abstract
No abstract record available.
Inventors
- 👤 Anton M Felier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:27
CPC Classifications
G; G01; G01L; G01L3/00; G01L3/02; G01L3/04; G01L3/10; G01L3/101; G01L3/102; G01L3/105; G01L3/24; G01L3/242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1906551A
Cited
US2053560A
Cited
GB442441A
Cited
FR831342A
Cited
US2287794A
Cited
US2260036A
Cited
US2338732A
Cited
US2365073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |