US2921544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Button feeding attachment for sewing machines
Assignee: AJ Mitchell Co
•
Filing: 1955-09-22
•
Granted: 1960-01-19
•
Expires: 1975-09-22
Abstract
No abstract record available.
Inventors
- 👤 Grant N Willis
- 👤 Jr Frank A Clary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:55
CPC Classifications
D; D05; D05B; D05B3/00; D05B3/12; D05B3/14; D05B65/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US672022A
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US687254A
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US761285A
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US1230860A
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US2661709A
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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 |