US2575000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling device for electrical apparatus in particular electric brakes
Assignee: Telma SAS
•
Filing: 1948-05-29
•
Granted: 1951-11-13
•
Expires: 1968-05-29
Abstract
No abstract record available.
Inventors
- 👤 Bessiere Pierre Etienne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:29
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; H02K49/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US912504A
Cited
US1592804A
Cited
US2012748A
Cited
US2068820A
Cited
US2167487A
Cited
GB509359A
Cited
US2298725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |