US3434838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-developable reproduction material
Assignee: Keuffel and Esser Co
•
Filing: 1965-02-24
•
Granted: 1969-03-25
•
Expires: 1985-02-24
Abstract
No abstract record available.
Inventors
- 👤 Johannes Munder
- 👤 Gunther Hertzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA597615A
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US2617727A
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GB931668A
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US3076707A
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FR1249913A
Cited
GB909491A
Cited
GB907724A
Cited
US3159487A
Cited
US3312551A
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US3169067A
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US3255007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |