US3672744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holographic system and process utilizing a wet cell phase hologram
Assignee: International Business Machines Corp
•
Filing: 1970-10-06
•
Granted: 1972-06-27
•
Expires: 1990-10-06
Abstract
Abstract A SYSTEM AND METHOD FOR HOLOGRAPHY IN WHICH THE RECORDING MEDIUM IS EXPOSED AND VIEWED IMMERSED IN A LIQUID WHICH IS EFFECTIVE TO RELIEVE THE RESIDUAL STRESSES IN THE MEDIUM.
Inventors
- 👤 Douglas H Strope
- 👤 Alan D Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:57
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/04; G03H1/0486; G03H1/02; G03H2001/0208; G03H2001/0232; G03H1/18; G03H2001/186; G03H2210/00; G03H2210/62; G03H2260/00; G03H2260/16; 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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |