Patent US2447468A successfully refreshed from Google Patents.
US2447468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film holder and film envelope to be used therewith
Assignee: Individual
•
Filing: 1945-05-23
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Granted: 1948-08-17
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Expires: 1965-05-23
Abstract
No abstract record available.
Inventors
- 👤 James A Reyniers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:14
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US660394A
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US783613A
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US915988A
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US1950863A
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US2099976A
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US2049497A
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US2074890A
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US2168418A
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US2263023A
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US2351877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |