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Patent US2543290A successfully refreshed from Google Patents.
US2543290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chuck
Assignee: Individual
•
Filing: 1949-02-14
•
Granted: 1951-02-27
•
Expires: 1969-02-14
Abstract
No abstract record available.
Inventors
- 👤 Johansson Erik Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:47
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/103; B23B31/12; B23B31/223; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17769; Y10T279/17777
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |