US3496332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous plate developer for thermally sensitive film
Assignee: 3M Co
•
Filing: 1968-02-08
•
Granted: 1970-02-17
•
Expires: 1988-02-08
Abstract
No abstract record available.
Inventors
- 👤 George G Lunde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:23
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/30; G03B27/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1517434A
Cited
US2532032A
Cited
US2668701A
Cited
US3084489A
Cited
US3311525A
Cited
US3382789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |