Patent US2771593A successfully refreshed from Google Patents.
Patent US2683894A successfully refreshed from Google Patents.
US2683894A
Expired / Lapsed
US
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Apparatus for treating plastic film
Assignee: TRAVER Corp
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Filing: 1951-06-27
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Granted: 1954-07-20
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Expires: 1971-06-27
Abstract
No abstract record available.
Inventors
- 👤 Mathew F Kritchever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:50
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/08; B29K; B29K2023/00; B29K2027/00; Y; Y10; Y10S; Y10S74/00; Y10S74/10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/18128; Y10T74/18136
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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |