US3567444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holographic recording method
Assignee: AT&T Inc
•
Filing: 1967-10-20
•
Granted: 1971-03-02
•
Expires: 1987-10-20
Abstract
Abstract THIS DISCLOSURE RELATES TO A HOLOGRAPHIC RECORDING METHOD WHICH USES A SENSITIZED GELATIN FILMS AS THE RECORDING MEDIUM, AND WHICH EMPLOYS A CRITICAL FILM-DEVELOPMENT STEP IN PROCESSING.
Inventors
- 👤 Theodore A Shankoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:58
CPC Classifications
G; G03; G03B; G03B15/00; G02; G02B; G02B5/00; G02B5/32; G03H; G03H1/00; G03H1/04; G03H1/18; Y; Y10; Y10S; Y10S359/00; Y10S359/90
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) | 1974-03-01 | 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 |