US2731598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for tracing underground cables and detecting flaws therein
Assignee: WHITNEY W POTTER
•
Filing: 1951-08-17
•
Granted: 1956-01-17
•
Expires: 1971-08-17
Abstract
No abstract record available.
Inventors
- 👤 Herbert Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:38
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/15; G01R; G01R31/00; G01R31/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE16651E
Cited
US645603A
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US659357A
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US1624537A
Cited
US1376592A
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US1340193A
Cited
GB577080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |