US3426189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for penetrating fog with a light beam
Assignee: MARSHALL P DEPUTY
•
Filing: 1967-06-12
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Granted: 1969-02-04
•
Expires: 1987-06-12
Abstract
No abstract record available.
Inventors
- 👤 Marshall P Deputy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:25
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/10; F21S41/12; F21S41/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2278142A
Cited
US2423322A
Cited
US2502880A
Cited
US3049962A
Cited
US3034029A
Cited
US3333094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |