Patent US2554544A successfully refreshed from Google Patents.
US2554544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnifying attachment for sewing machines
Assignee: Individual
•
Filing: 1947-07-15
•
Granted: 1951-05-29
•
Expires: 1967-07-15
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:05
CPC Classifications
D; D05; D05B; D05B87/00; D05B87/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE273725C
Cited
US294171A
Cited
US756024A
Cited
US996039A
Cited
US1059868A
Cited
US1258107A
Cited
US1521508A
Cited
US1806252A
Cited
FR770056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |