US3415984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incipient fog detecting system and method
Assignee: Individual
•
Filing: 1965-02-25
•
Granted: 1968-12-10
•
Expires: 1985-02-25
Abstract
No abstract record available.
Inventors
- 👤 Frungel Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:54
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/53; G01N21/538
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2237193A
Cited
US2504981A
Cited
US2758215A
Cited
US2654845A
Cited
US2930893A
Cited
US3299769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |