US2968334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing sheets of thermoplastic material
Assignee: Individual
•
Filing: 1957-05-09
•
Granted: 1961-01-17
•
Expires: 1977-05-09
Abstract
No abstract record available.
Inventors
- 👤 Pedersen Bent Hojberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:31
CPC Classifications
B; B29; B29D; B29D7/00; B29D7/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US785321A
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US1217879A
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US1573220A
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US2131024A
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US2081060A
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US2609320A
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US2723215A
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US2882673A
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US2792324A
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US2845109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |