Patent US1563084A successfully refreshed from Google Patents.
US1563084A
Expired / Lapsed
US
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System for operating alternating-current motors from direct-current sources
Assignee: Landis and Gyr Metering Inc
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Filing: 1924-05-05
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Granted: 1925-11-24
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Expires: 1944-05-05
Abstract
No abstract record available.
Inventors
- 👤 Harris Jesse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/533
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) | 1928-11-23 | 1929-05-25 | 1929-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-11-23 | 1933-05-25 | 1933-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-11-23 | 1937-05-25 | 1937-11-24 | $7700.00 | Window Closed / Lapsed |