US3409937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous milling and devolatilizing apparatus
Assignee: Union Carbide Corp
•
Filing: 1966-12-28
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Granted: 1968-11-12
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Expires: 1986-12-28
Abstract
No abstract record available.
Inventors
- 👤 Felix P Klosek
- 👤 Richard E Nicolson
- 👤 Sydney P Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:25
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/76; B29C48/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2434707A
Cited
US2615199A
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US3082816A
Cited
US2836851A
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US3040005A
Cited
US3257173A
Cited
US3156009A
Cited
US3147514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |