US2973732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewing machines
Assignee: Union Special Machine Co
•
Filing: 1957-10-02
•
Granted: 1961-03-07
•
Expires: 1977-10-02
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:51
CPC Classifications
D; D05; D05B; D05B1/00; D05B1/08; D05B1/10; D05B53/00; D05B57/00; D05B57/02; D05B73/00; D05B73/04; D05B73/12; D05D; D05D2207/00; D05D2207/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1587957A
Cited
US1528499A
Cited
US1640201A
Cited
US1949073A
Cited
US2596728A
Cited
US2704042A
Cited
US2834309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |