US2439716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming hollow articles from oriented polymer
Assignee: Plax Corp
•
Filing: 1944-01-27
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Granted: 1948-04-13
•
Expires: 1964-01-27
Abstract
No abstract record available.
Inventors
- 👤 Robert W Canfield
- 👤 Fred E Wiley
- 👤 Antone M Guerreiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C49/00; B29C49/42; B29C49/44; B29C43/00; B29C43/02; B29C43/10; B29C43/12; Y; Y10; Y10S; Y10S220/00; Y10S220/12; Y10S220/14
Claims Analysis
Total Claims: 0
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US2345112A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-13 | 1951-10-13 | 1952-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-13 | 1955-10-13 | 1956-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-13 | 1959-10-13 | 1960-04-13 | $7700.00 | Window Closed / Lapsed |