US2620366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction stirrer
Assignee: ABB Norden Holding AB
•
Filing: 1950-12-08
•
Granted: 1952-12-02
•
Expires: 1970-12-08
Abstract
No abstract record available.
Inventors
- 👤 Ladell Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:30
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B6/00; H05B6/02; H05B6/34; H05B2213/00; H05B2213/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US428379A
Cited
US1818107A
Cited
US1834445A
Cited
US1861870A
Cited
US1922034A
Cited
US2041333A
Cited
US2363582A
Cited
US2513082A
Cited
US2433495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |