US2686122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic light-sensitive element
Assignee: Individual
•
Filing: 1948-11-09
•
Granted: 1954-08-10
•
Expires: 1968-11-09
Abstract
No abstract record available.
Inventors
- 👤 Harold C Purdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US306594A
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US770421A
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GB190424774A
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US1184772A
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US1469415A
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US2169003A
Cited
US2203652A
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US2266435A
Cited
US2367551A
Cited
US2371746A
Cited
US2391181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |