US3549992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus responsive to inductive reactance for measuring distance along a pair of conductors
Assignee: TOM R REINHART
•
Filing: 1967-03-31
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Granted: 1970-12-22
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Expires: 1987-03-31
Abstract
No abstract record available.
Inventors
- 👤 Tom R Reinhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:54
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/20; G01D5/2006; G01D5/202; G01C; G01C13/00; G01C13/002; G01C13/004; G01R; G01R31/00; G01R31/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1532871A
Cited
US2138677A
Cited
US2817234A
Cited
US2941069A
Cited
GB861850A
Cited
US3155350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |