US3386826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing improved diazotype elements
Assignee: International Business Machines Corp
•
Filing: 1964-05-08
•
Granted: 1968-06-04
•
Expires: 1984-05-08
Abstract
No abstract record available.
Inventors
- 👤 Claude M Aebi
- 👤 Bernard J Serafin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:38
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2588218A
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US2616803A
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GB895250A
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US3144334A
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US3046128A
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US3149971A
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US3143418A
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US3271155A
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US3255007A
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US3303028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |