US3556639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural source optical apparatus and method for displaying spatially periodically modulated records
Assignee: Technical Operations Inc
•
Filing: 1967-11-07
•
Granted: 1971-01-19
•
Expires: 1987-11-07
Abstract
Abstract APPARATUS AND METHODS FOR RECOVING IMAGES WHICH ARE STORED ON PHOTOGRAPHIC RECORDS AS MODULATIONS OF AZIMUTHALLY DISTINCT SPATIAL CARRIERS. STRESS IS PLACED UPON A NOVEL ARRANGEMENT FOR PROVIDING A PLURALITY OF SOURCES AND NOVEL APPARATUS FOR SPATIALLY AND SPECTRALLY FILTERING THE PLURALITY OF INFORMATION CHANNELS CREATED SO AS TO PRODUCE DISPLAYS OF MAXIMUM FIDELITY.
Inventors
- 👤 Michael Graser Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:29
CPC Classifications
G; G03; G03C; G03C7/00; G02; G02B; G02B27/00; G02B27/42; G02B27/4233; G02B27/4238; G03B; G03B33/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |