US2880609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for gaging fiber characteristics
Assignee: Sheffield Corp
•
Filing: 1956-01-05
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Granted: 1959-04-07
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Expires: 1976-01-05
Abstract
No abstract record available.
Inventors
- 👤 Elwood L Byrkett
- 👤 Iii Nelson Emmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:17
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/36; G01N33/362; G01N33/34; G01N33/343
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306657A
Cited
US1515746A
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US2352836A
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US2521079A
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US2659433A
Cited
US2706904A
Cited
US2790320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |