US2615068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric induction motor with totally enclosed liquidproof stator
Assignee: ING SILVIO IMMOVILLI
•
Filing: 1948-01-12
•
Granted: 1952-10-21
•
Expires: 1968-01-12
Abstract
No abstract record available.
Inventors
- 👤 Radice Ambrogio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:06
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR745234A
Cited
US693579A
Cited
US1678380A
Cited
US1978100A
Cited
US2036456A
Cited
US2187033A
Cited
US2400576A
Cited
US2463936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |