Patent US3469281A successfully refreshed from Google Patents.
US3469281A
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Method and apparatus for extruding and applying plastic materials
Assignee: Weyerhaeuser Co
•
Filing: 1965-09-10
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Granted: 1969-09-30
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Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Le Roy Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:57
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/022; B29C48/03; B29C48/07; B29C48/285; B29C48/288; B29C48/2886; B29C48/29; B29C48/30; B29C48/305; B29C48/12; B29C48/15; B29K; B29K2101/00; B29K2101/10; B29K2105/00; B29K2105/0005; B29K2105/06; B29K2105/16; B29K2301/00; B29K2301/10
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) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |