US2781981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive stop device in winding machines
Assignee: Skenandoa Rayon Corp
•
Filing: 1954-01-19
•
Granted: 1957-02-19
•
Expires: 1974-01-19
Abstract
No abstract record available.
Inventors
- 👤 Demarche Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:14
CPC Classifications
B; B65; B65H; B65H63/00; B65H63/02; B65H63/024; B65H63/036; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US801941A
Cited
FR558309A
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US1595705A
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FR583482A
Cited
US1673246A
Cited
FR664780A
Cited
US1856513A
Cited
US1841680A
Cited
US2361426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |