Patent US4060896A successfully refreshed from Google Patents.
Patent US2803764A successfully refreshed from Google Patents.
US2803764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cooled electromagnetic apparatus
Assignee: Eaton Corp
•
Filing: 1953-01-19
•
Granted: 1957-08-20
•
Expires: 1973-01-19
Abstract
No abstract record available.
Inventors
- 👤 Henry P Lundskow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:01
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; H02K49/043
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1114727A
Cited
US1630835A
Cited
GB454102A
Cited
US2367636A
Cited
US2367163A
Cited
US2412706A
Cited
US2417686A
Cited
GB623674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |