US2728273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper machinery
Assignee: Black Clawson Co
•
Filing: 1951-12-29
•
Granted: 1955-12-27
•
Expires: 1971-12-29
Abstract
No abstract record available.
Inventors
- 👤 Javid Farhang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:29
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/48; D21F1/52; D21F1/523
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1090974A
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US1458558A
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US1833350A
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US1833351A
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US1926319A
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US1940594A
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US2601378A
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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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |