US3501239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring device for the maximum visual distance in the fog
Assignee: Umicore NV SA
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Filing: 1965-10-11
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Granted: 1970-03-17
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Expires: 1985-10-11
Abstract
No abstract record available.
Inventors
- 👤 Paul Rouet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:34
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/18; B64F1/20; G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/53; G01N21/538; G01S; G01S11/00; G01S11/12
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) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |