US2349178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for extruding and blowing organic plastic materials
Assignee: Plax Corp
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Filing: 1941-08-04
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Granted: 1944-05-16
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Expires: 1961-08-04
Abstract
No abstract record available.
Inventors
- 👤 William H Kopitke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:20
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/02; B29C49/04; B29C49/04104; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/30; B29C48/32; B29C48/36; B29C48/475; B29C48/50; B29C48/695; B29C48/70; B29C48/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-05-16 | 1947-11-15 | 1948-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-16 | 1951-11-15 | 1952-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-16 | 1955-11-15 | 1956-05-16 | $7700.00 | Window Closed / Lapsed |