Patent US2873643A successfully refreshed from Google Patents.
US2873643A
Expired / Lapsed
US
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Devices for viewing with magnification relief images on lenticulated films
Assignee: Individual
•
Filing: 1954-03-23
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Granted: 1959-02-17
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Expires: 1974-03-23
Abstract
No abstract record available.
Inventors
- 👤 Anne Henri Jacques D St-Genies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/024; G02B27/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191314716A
Cited
US1283815A
Cited
US1808725A
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US1749278A
Cited
US1931228A
Cited
US2351032A
Cited
FR989739A
Cited
US2652499A
Cited
FR1046676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |