US2543307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic milling apparatus
Assignee: Union Carbide Corp
•
Filing: 1948-08-06
•
Granted: 1951-02-27
•
Expires: 1968-08-06
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Swallow
- 👤 Henry H Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:51
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/52; B29B7/523; B29B7/526; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/40; B29C48/41; B29C48/78; B29C48/80; B29C48/84; B29C48/03; B29C48/07; B29C48/08; B29C48/12; B29C48/845; B29C48/85
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1935050A
Cited
US2434707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |