US2417097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable inductance for telemetering systems
Assignee: Individual
•
Filing: 1945-04-10
•
Granted: 1947-03-11
•
Expires: 1965-04-10
Abstract
No abstract record available.
Inventors
- 👤 Howard D Warshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:29
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1891156A
Cited
US2069959A
Cited
US2027140A
Cited
US2050629A
Cited
US2096867A
Cited
US2134104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-10 | 1950-09-09 | 1951-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-10 | 1954-09-09 | 1955-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-10 | 1958-09-09 | 1959-03-11 | $7700.00 | Window Closed / Lapsed |