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Patent US1246687A successfully refreshed from Google Patents.
US1246687A
Expired / Lapsed
US
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Remote control for electric motors.
Assignee: SUNDH ELECTRIC Co
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Filing: 1914-10-22
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Granted: 1917-11-13
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Expires: 1934-10-22
Abstract
No abstract record available.
Inventors
- 👤 Chalmers P Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:30
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0052
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) | 1920-11-12 | 1921-05-14 | 1921-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-11-12 | 1925-05-14 | 1925-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-11-12 | 1929-05-14 | 1929-11-13 | $7700.00 | Window Closed / Lapsed |