US1436323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for testing fibrous materials
Assignee: AT&T Inc
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Filing: 1919-06-28
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Granted: 1922-11-21
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Expires: 1939-06-28
Abstract
No abstract record available.
Inventors
- 👤 George L Schnable
- 👤 Frank F Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:59
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/32
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) | 1925-11-20 | 1926-05-22 | 1926-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-11-20 | 1930-05-22 | 1930-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-11-20 | 1934-05-22 | 1934-11-21 | $7700.00 | Window Closed / Lapsed |