US2874412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for centrifugal molding of articles from thermoplastic materials which exhibit substantial volumetric shrinkage
Assignee: Polymer Corp
•
Filing: 1953-03-02
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Granted: 1959-02-24
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Expires: 1973-03-02
Abstract
No abstract record available.
Inventors
- 👤 Norbert A Flemming
- 👤 Eugene E Montross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:29
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/34; B29C41/38; B29B; B29B13/00; B29C41/02; B29C41/04; B29C41/042; B29C41/42; B29K; B29K2077/00; Y; Y10; Y10S; Y10S264/00; Y10S264/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |