US2194285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical voltage transformation apparatus
Assignee: Schneider Electric Buildings Americas Inc
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Filing: 1936-03-23
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Granted: 1940-03-19
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Expires: 1956-03-23
Abstract
No abstract record available.
Inventors
- 👤 Edgar D Lilja
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:01
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/10; H02M5/12; H01; H01F; H01F27/00; H01F27/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-03-19 | 1943-09-18 | 1944-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-19 | 1947-09-18 | 1948-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-19 | 1951-09-18 | 1952-03-19 | $7700.00 | Window Closed / Lapsed |