US2513838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making porous fabric
Assignee: Individual
•
Filing: 1946-07-11
•
Granted: 1950-07-04
•
Expires: 1966-07-11
Abstract
No abstract record available.
Inventors
- 👤 Herbert W Beall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:13
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/26; B26F1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1862633A
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US2167724A
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US2106806A
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US2289177A
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US2286117A
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US2340546A
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US2365576A
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US2388069A
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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) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |