US3421182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw press for extruding plastic materials
Assignee: LAVORAZIONE MAT PLAST
•
Filing: 1966-11-08
•
Granted: 1969-01-14
•
Expires: 1986-11-08
Abstract
No abstract record available.
Inventors
- 👤 Roberto Colombo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/24; B30B11/246; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/40; B29C48/402; B29C48/405; B29C48/50; B29C48/505; B29C48/51; B29C48/515; B29C48/78; B29C48/80; B29C48/84; B29C48/85; B29C48/875; B30B11/243; B29C48/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2449355A
Cited
US2632203A
Cited
US2631016A
Cited
US3283041A
Cited
US3252182A
Cited
US3310836A
Cited
US3331100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |