Patent US2602253A successfully refreshed from Google Patents.
US2602253A
Expired / Lapsed
US
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Device for viewing transparent photographs
Assignee: Individual
•
Filing: 1948-02-20
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Granted: 1952-07-08
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Expires: 1968-02-20
Abstract
No abstract record available.
Inventors
- 👤 Diamond Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:39
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE231872C
Cited
US589372A
Cited
GB521337A
Cited
US1130333A
Cited
CH123245A
Cited
GB500226A
Cited
US2227898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |