US3490037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave measurement of material thickness
Assignee: British Iron and Steel Research Association BISRA
•
Filing: 1966-05-02
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Granted: 1970-01-13
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Royson V Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:52
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/32; G01S13/36; G01B; G01B15/00; G01B15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3258688A
Cited
US2640190A
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US2970258A
Cited
US3117276A
Cited
US3267357A
Cited
US3265967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |