Patent US2701694A successfully refreshed from Google Patents.
US2701694A
Expired / Lapsed
US
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Thread tension device for sewing machines
Assignee: White Sewing Machine Corp
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Filing: 1952-03-20
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Granted: 1955-02-08
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Expires: 1972-03-20
Abstract
No abstract record available.
Inventors
- 👤 Sidney J Hamlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:42
CPC Classifications
D; D05; D05B; D05B47/00; D05B47/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |