US2791801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for continuously producing thermoplastic organic synthetic plastic sheets having polished surfaces
Assignee: Individual
•
Filing: 1953-12-09
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Granted: 1957-05-14
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Expires: 1973-12-09
Abstract
No abstract record available.
Inventors
- 👤 Szantay Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:43
CPC Classifications
B; B29; B29C; B29C67/00; B29C48/00; B29C48/001; B29C59/00; B29C59/02; B29C59/04; B29C48/03; B29C48/07; B29C48/08; B29K; B29K2995/00; B29K2995/0037; B29K2995/0072; B29K2995/0073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |