US3479422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular extrusion having integral web
Assignee: Phillips Petroleum Co
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Filing: 1966-10-27
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Granted: 1969-11-18
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Expires: 1986-10-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Zavasnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:48
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/04; B29C49/0411; B29C49/04114; B29C45/00; B29C45/14; B29C48/00; B29C48/03; B29C48/09; B29C48/13; B29C48/25; B29C48/30; B29C48/32; B29C48/325; B29C48/34; B29C49/04102; B29C48/001; B29C48/0018; B29C48/0022; B29L; B29L2023/00; B29L2023/003
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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |