US2491418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic inspection device
Assignee: ExxonMobil Oil Corp
•
Filing: 1946-04-04
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Granted: 1949-12-13
•
Expires: 1966-04-04
Abstract
No abstract record available.
Inventors
- 👤 Carleton H Schlesman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:50
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01B; G01B15/00; G01F23/28; G01F23/284; G01N; G01N22/00; G01N22/02; G01V; G01V3/00; G01V3/08; G01V3/10; G01V3/101; H; H01; H01P; H01P7/00; H01P7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |