US2541570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for finishing extruded pipes of clayware
Assignee: Individual
•
Filing: 1947-06-10
•
Granted: 1951-02-13
•
Expires: 1967-06-10
Abstract
No abstract record available.
Inventors
- 👤 John F Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:39
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/92; B28B21/96; Y; Y10; Y10S; Y10S425/00; Y10S425/218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US120999A
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GB190412559A
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US817045A
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US815238A
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GB190910441A
Cited
US1006574A
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US1108845A
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US1340929A
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US1461222A
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US1938230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |