Patent US2958778A successfully refreshed from Google Patents.
US2958778A
Expired / Lapsed
US
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Thermoprinting apparatus
Assignee: 3M Co
•
Filing: 1957-07-22
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Granted: 1960-11-01
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Expires: 1977-07-22
Abstract
No abstract record available.
Inventors
- 👤 Carl S Miller
- 👤 Donal G Kimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:36
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)
US1303837A
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US2026000A
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US2421150A
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US2586286A
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US2616344A
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US2740895A
Cited
US2726587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |