US2900940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewing machines with bobbin thread controlling means
Assignee: Singer Co
•
Filing: 1956-12-12
•
Granted: 1959-08-25
•
Expires: 1976-12-12
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:05
CPC Classifications
D; D05; D05B; D05B57/00; D05B57/08; D05B57/10; D05B57/14; D05B57/143; D05B29/00; D05B29/06; D05B73/00; D05B73/04; D05B73/12; D05D; D05D2205/00; D05D2205/12; D05D2205/16; D05D2209/00; D05D2209/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1775913A
Cited
US1792237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |