Patent US2863174A successfully refreshed from Google Patents.
US2863174A
Expired / Lapsed
US
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Production of preforms and longitudinally curved articles of polytetrafluoroethyleneresin
Assignee: Resistoflex Corp
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Filing: 1956-09-05
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Granted: 1958-12-09
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Expires: 1976-09-05
Abstract
No abstract record available.
Inventors
- 👤 Paul D Schuman
- 👤 Edward J Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/475; B29C48/03; B29C48/04; B29C48/022; B29D; B29D23/00; B29C48/001; B29C48/09; B29C48/10; B29K; B29K2027/00; B29K2027/12; B29K2027/18
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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |