US3014372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic force-balance signal transmitters
Assignee: Cheltenham Auto Controls Ltd
•
Filing: 1956-06-26
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Granted: 1961-12-26
•
Expires: 1976-06-26
Abstract
No abstract record available.
Inventors
- 👤 Hallett Henry Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:42
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2408685A
Cited
US2520468A
Cited
US2655037A
Cited
FR1005207A
Cited
US2535198A
Cited
US2672151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |