Patent US3500870A successfully refreshed from Google Patents.
US3500870A
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Fep 160 fluorocarbon tubing and process
Assignee: Pennsylvania Fluorocarbon Co Inc
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Filing: 1967-05-02
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Granted: 1970-03-17
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Expires: 1987-05-02
Abstract
No abstract record available.
Inventors
- 👤 Berten E Ely Jr
- 👤 Ira T Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:31
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/20; F16L47/22; B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C61/00; B29C61/003; B29C61/06; B29C61/08; B29K; B29K2027/00; B29K2027/12; B29K2027/18; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1331; Y10T428/31504; Y10T428/3154
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3196194A
Cited
US3265092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |