US3499760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diazotype photoprinting materials and methods of use
Assignee: Eugene Dietzgen Co
•
Filing: 1968-05-02
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Granted: 1970-03-10
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Expires: 1988-05-02
Abstract
No abstract record available.
Inventors
- 👤 Luigi Amariti
- 👤 Hartwell L Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:46
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58; G03C1/585
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB514850A
Cited
US2500099A
Cited
GB868715A
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US2915396A
Cited
US3140180A
Cited
GB983665A
Cited
US3331689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |