US2428104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eddy-current apparatus
Assignee: Individual
•
Filing: 1944-06-14
•
Granted: 1947-09-30
•
Expires: 1964-06-14
Abstract
No abstract record available.
Inventors
- 👤 Winther Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:34
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; H02K49/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US579051A
Cited
US876949A
Cited
US1271401A
Cited
US1418390A
Cited
US1977600A
Cited
US2289330A
Cited
US2233060A
Cited
US2287953A
Cited
GB558961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-29 | 1951-03-31 | 1951-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-29 | 1955-03-31 | 1955-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-29 | 1959-03-31 | 1959-09-30 | $7700.00 | Window Closed / Lapsed |