US3446916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collimated viewing system
Assignee: RTX Corp
•
Filing: 1964-07-29
•
Granted: 1969-05-27
•
Expires: 1984-07-29
Abstract
No abstract record available.
Inventors
- 👤 Irving R Abel
- 👤 Thomas D Kegelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:31
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/0101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126495A
Cited
US2166399A
Cited
US2305855A
Cited
US2453003A
Cited
US2466329A
Cited
US2927315A
Cited
US3230819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |