US2163518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telemetric system using electrical resistance
Assignee: Individual
•
Filing: 1936-09-09
•
Granted: 1939-06-20
•
Expires: 1956-09-09
Abstract
No abstract record available.
Inventors
- 👤 Postlethwaite Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0041; G01L9/0051; G01L9/0058; G01L9/0001; G01L9/0002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-06-19 | 1942-12-19 | 1943-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-19 | 1946-12-19 | 1947-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-19 | 1950-12-19 | 1951-06-20 | $7700.00 | Window Closed / Lapsed |