Patent US2972301A successfully refreshed from Google Patents.
US2972301A
Expired / Lapsed
US
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Printing process and apparatus
Assignee: Interchemical Corp
•
Filing: 1954-04-06
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Granted: 1961-02-21
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Expires: 1974-04-06
Abstract
No abstract record available.
Inventors
- 👤 Albert E Gessler
- 👤 Marchi Vincent S De
- 👤 William Van Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:51
CPC Classifications
B; B41; B41M; B41M1/00; B41F; B41F31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2319853A
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US2409215A
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US2649381A
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US2578921A
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US2707916A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |