US2820959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipeline scraper-locator transmitter
Assignee: Standard Oil Co
•
Filing: 1956-03-05
•
Granted: 1958-01-21
•
Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 James E Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:27
CPC Classifications
G; G01; G01V; G01V15/00; G01M; G01M3/00; G01M3/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2601249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |