US2921547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle positioning devices for sewing machines
Assignee: TRIMLESS Inc
•
Filing: 1956-07-16
•
Granted: 1960-01-19
•
Expires: 1976-07-16
Abstract
No abstract record available.
Inventors
- 👤 William W Artzt
- 👤 Rieger Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:30
CPC Classifications
D; D05; D05B; D05B69/00; D05B69/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1545116A
Cited
US1880164A
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US2483138A
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US2620136A
Cited
US2604062A
Cited
US2621620A
Cited
US2708415A
Cited
US2707927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |