US2548797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seam ripping knife
Assignee: Cons Sewing Machine & Supply C
•
Filing: 1946-11-20
•
Granted: 1951-04-10
•
Expires: 1966-11-20
Abstract
No abstract record available.
Inventors
- 👤 Ingwer Max
- 👤 Werner W Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
A; A41; A41H; A41H31/00; A41H31/005; D; D05; D05B; D05B89/00; Y; Y10; Y10S; Y10S30/00; Y10S30/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US174417A
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US905641A
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US1159802A
Cited
US1434388A
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US2033755A
Cited
US2051199A
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US2411686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |