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US3427165A
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US
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Diazotype materials and methods for producing diazotype images
Assignee: International Business Machines Corp
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Filing: 1966-01-03
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Granted: 1969-02-11
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert B Champ
- 👤 Bernard I Halperin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:23
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2245628A
Cited
US2970909A
Cited
GB867432A
Cited
GB941838A
Cited
GB937510A
Cited
GB980376A
Cited
US3307949A
Cited
US3364833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |