Patent US2890668A successfully refreshed from Google Patents.
US2890668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buttonhole attachment for sewing machines
Assignee: Greist Manufacturing Co
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Filing: 1958-02-27
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Granted: 1959-06-16
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Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 Harry N Johnson
- 👤 Carl G Baehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:30
CPC Classifications
D; D05; D05B; D05B3/00; D05B3/24; D10; D10B; D10B2501/00; D10B2501/06; D10B2501/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2660138A
Cited
US2649063A
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US2619925A
Cited
US2669202A
Cited
US2645191A
Cited
US2700948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-15 | 1962-12-15 | 1963-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-15 | 1966-12-15 | 1967-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-15 | 1970-12-15 | 1971-06-16 | $7700.00 | Window Closed / Lapsed |