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Patent US2687261A successfully refreshed from Google Patents.
US2687261A
Expired / Lapsed
US
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Spool construction
Assignee: Dominion Magnesium Ltd
•
Filing: 1951-11-07
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Granted: 1954-08-24
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Expires: 1971-11-07
Abstract
No abstract record available.
Inventors
- 👤 Jarmicki Wincenty Zygmunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:49
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/04; B65H75/08; B65H75/14; B65H2701/00; B65H2701/50; B65H2701/51; B65H2701/513; B65H2701/5134
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US602260A
Cited
US602241A
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US1248830A
Cited
US1207485A
Cited
US1842113A
Cited
US1999422A
Cited
US2352501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |