US2688293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Looper mechanism for sewing machines
Assignee: Union Special Machine Co
•
Filing: 1951-08-03
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Granted: 1954-09-07
•
Expires: 1971-08-03
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hayes
- 👤 Sr Arthur W Virta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:35
CPC Classifications
D; D05; D05B; D05B57/00; D05B57/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1912959A
Cited
US2029233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |