US2421132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension equalizer for plastic extruders
Assignee: Modern Plastic Machinery Corp
•
Filing: 1945-10-25
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Granted: 1947-05-27
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Expires: 1965-10-25
Abstract
No abstract record available.
Inventors
- 👤 Henning T Tornberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:33
CPC Classifications
B; B26; B26D; B26D3/00; B26D3/001; B29; B29C; B29C48/00; B29C48/001; B29C48/0018; B29C48/0019; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1435659A
Cited
US1769730A
Cited
US1993349A
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US2177633A
Cited
US2287282A
Cited
US2324645A
Cited
US2358376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-26 | 1950-11-25 | 1951-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-26 | 1954-11-25 | 1955-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-26 | 1958-11-25 | 1959-05-27 | $7700.00 | Window Closed / Lapsed |