US2666947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing tubular articles by extrusion
Assignee: BITUMEX Ltd
•
Filing: 1950-11-08
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Granted: 1954-01-26
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Expires: 1970-11-08
Abstract
No abstract record available.
Inventors
- 👤 Shaw Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:22
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/325; B29C48/327; B29C48/022; B29C48/03; B29C48/09; B29C48/001; B29C48/0022; B29C48/10; B29C48/15; B29K; B29K2105/00; B29K2105/06; B29K2105/12; Y; Y10; Y10S; Y10S138/00; Y10S138/07
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) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |