Patent US3515547A successfully refreshed from Google Patents.
US3515547A
Expired / Lapsed
US
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Tri layer photographic film with a vesicular layer and process
Assignee: Eastman Kodak Co
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Filing: 1965-09-15
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Granted: 1970-06-02
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Expires: 1985-09-15
Abstract
No abstract record available.
Inventors
- 👤 Norman Allentoff
- 👤 Richard J Rotondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:04
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |