US2697387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for winding tubes
Assignee: Daystrom Inc
•
Filing: 1951-04-27
•
Granted: 1954-12-21
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Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
- 👤 Robert W Falconer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:33
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/09; B29; B29C; B29C33/00; B29C33/02; B29C53/00; B29C53/56; B29C53/562; B29C33/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US155703A
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US2048360A
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US2321738A
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US2440390A
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US2569856A
Cited
US2489503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |