Patent US3501587A successfully refreshed from Google Patents.
US3501587A
Expired / Lapsed
US
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In-line holographic arrangement for imaging a person viewing a television screen
Assignee: AT&T Inc
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Filing: 1966-12-21
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Granted: 1970-03-17
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Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Donald R Herriott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/02; G02B5/0205; G02B5/0252; G02B5/18; G02B5/1876; G03; G03H; G03H1/00; G03H1/04; G03H1/0402; G03H1/0406; G03H1/041; H; H04; H04N; H04N7/00; H04N7/14; H04N7/141; H04N7/142; H04N7/144; G03H1/0005; G03H1/0011; G03H2001/0016; G03H2001/0066
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) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |