US3567313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical foliage penetrator
Assignee: Ingenuics Inc
•
Filing: 1969-04-04
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Granted: 1971-03-02
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Expires: 1989-04-04
Abstract
Abstract A DEVICE FOR PERMITTING OPTICAL PENETRATION OF FOLIAGE BY CONSTANTLY CHANGING THE LINE OF SIGHT THROUGH THE FOLIAGE SO AS TO UTILIZE THE LIMITED OPEN AREAS EXISTING IN FOLIAGE TO PROVIDE AN OPTICAL SIGHT PATH. MECHANICALLY, THE DEVICE INCLUDES A CENTRAL VIEWING TUBE AND A PAIR OF MIRRORS ARRANGED SO THAT THE OUTER MIRROR CAN ROTATE IN A RELATIVELY WIDE CIRCLE.
Inventors
- 👤 Dwin R Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:53
CPC Classifications
G; G02; G02B; G02B23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |