US3468733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a spirally wound tube
Assignee: Sonoco Products Co
•
Filing: 1966-01-05
•
Granted: 1969-09-23
•
Expires: 1986-01-05
Abstract
No abstract record available.
Inventors
- 👤 Charles K Dunlap Jr
- 👤 James A Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:04
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/16; B; B29; B29C; B29C66/00; B29C66/50; B29C66/61; B31; B31C; B31C3/00; B29C65/00; B29C65/48; B29C65/50; B29C65/5042; B29C65/5092; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/4329
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |