Patent US3497256A successfully refreshed from Google Patents.
US3497256A
Expired / Lapsed
US
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Process for making a direct duplicate of a matrix formed from fiber materials
Assignee: Saint Gobain Performance Plastics Corp
•
Filing: 1965-02-18
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Granted: 1970-02-24
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Expires: 1985-02-18
Abstract
No abstract record available.
Inventors
- 👤 Solomon Rosenblatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:42
CPC Classifications
D; D04; D04H; D04H13/00; C; C08; C08J; C08J9/00; C08J9/24; C08J9/26; D01; D01D; D01D5/00; D01F; D01F9/00; D01F9/08; D01F9/12; D01F9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2586883A
Cited
US2520173A
Cited
US2805208A
Cited
US2728698A
Cited
US2764506A
Cited
US2876131A
Cited
US2825706A
Cited
US2937156A
Cited
US3056686A
Cited
US2838045A
Cited
US2977265A
Cited
US3121698A
Cited
US3108018A
Cited
US3047421A
Cited
US3111396A
Cited
US3090094A
Cited
US3095315A
Cited
US3202733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |