US3534437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extruding reinforced plastic tubing
Assignee: Millennium Petrochemicals Inc
•
Filing: 1967-12-11
•
Granted: 1970-10-20
•
Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 John J Quackenbush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:19
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/22; B29C48/00; B29C48/03; B29C48/05; B29C48/09; B29C48/10; B29C48/25; B29C48/30; B29C48/32; B29C70/20; B29C48/001; B29C48/0018; B29C48/15; B29L; B29L2023/00; B29L2023/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317426A
Cited
US2810424A
Cited
US2844846A
Cited
US3354506A
Cited
US3222722A
Cited
US3355768A
Cited
US3375550A
Cited
US3303251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |