Patent US3694218A successfully refreshed from Google Patents.
US3694218A
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US
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Method of hologram recording
Assignee: Raytheon Co
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Filing: 1970-03-03
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Granted: 1972-09-26
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Expires: 1990-03-03
Abstract
Abstract METHOD OF HOLOGRAPHIC PHOTOPOLYMER RECORDING BY AN OPTICAL SYSTEM OF THE INTERFERENCE PATTERN BETWEEN WAVEFRONTS EMANATING FROM AN OBJECT ILLUMINATED WITH LASER RADIATION AND A COHERENT REFERENCE WAVEFRONT.
Inventors
- 👤 John D Margerum
- 👤 Alexander D Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:27
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/02; G03F; G03F7/00; G03F7/0005; G03F7/001; G03H2001/026; G03H2001/0264; G03H2260/00; G03H2260/12; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/107; Y10S430/146
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |