US2443053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for manufacturing hollow plastic articles
Assignee: Wheeling Stamping Co
•
Filing: 1943-03-20
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Granted: 1948-06-08
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Expires: 1963-03-20
Abstract
No abstract record available.
Inventors
- 👤 William H Parmelee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/20; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/261; B29C45/46; B29C45/56; B29C2045/5695; B29L; B29L2023/00; B29L2023/20; Y; Y10; Y10S; Y10S264/00; Y10S264/41
Claims Analysis
Total Claims: 0
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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) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |