Patent US2511646A successfully refreshed from Google Patents.
US2511646A
Expired / Lapsed
US
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Means for the inspection of microphotographic and the like documents
Assignee: Generale Des Metaux Non Ferreux SA Ste
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Filing: 1947-08-07
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Granted: 1950-06-13
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Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Marmour Abel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:34
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/024; G02B27/025; Y; Y10; Y10S; Y10S40/00; Y10S40/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1358685A
Cited
US1460590A
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US1808725A
Cited
GB324395A
Cited
US2174778A
Cited
US2267649A
Cited
US2271296A
Cited
US2260551A
Cited
US2285644A
Cited
US2407009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |