US3479425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion method
Assignee: Dow Chemical Co
•
Filing: 1965-07-22
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Granted: 1969-11-18
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Expires: 1985-07-22
Abstract
No abstract record available.
Inventors
- 👤 Lloyd Edward Lefevre
- 👤 Peter Breidt Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:04
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/335; B29C48/336; B29C48/3363; B29C48/03; B29C48/07; B29C48/08; B29C48/16; B29C48/18; B29C48/21; B29C48/305; B29C48/307
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA652955A
Cited
US2803041A
Cited
US2978357A
Cited
GB985310A
Cited
US3223761A
Cited
US3189941A
Cited
US3321804A
Cited
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 |