US2912861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for the measurement and the control of the difference between two physical quantities
Assignee: Individual
•
Filing: 1955-11-01
•
Granted: 1959-11-17
•
Expires: 1975-11-01
Abstract
No abstract record available.
Inventors
- 👤 Coyne Andre
- 👤 Bellier Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:51
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/296; G01F23/2966; Y; Y10; Y10S; Y10S73/00; Y10S73/01
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |