US3060377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe inspection device
Assignee: Shell USA Inc
•
Filing: 1958-12-08
•
Granted: 1962-10-23
•
Expires: 1978-12-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:40
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/9013; G01N27/902; E; E21; E21B; E21B47/00; E21B47/006; E21B47/08; E21B47/085; G01N27/904; G01N27/9093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2065379A
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US2065118A
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US2124579A
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US2315943A
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US2555853A
Cited
US2573799A
Cited
US2455792A
Cited
US2573137A
Cited
US2844787A
Cited
US2896155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |