US781603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for transforming electrical energy.
Assignee: General Electric Vapor Lamp Co
•
Filing: 1902-09-24
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Granted: 1905-01-31
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Expires: 1922-09-24
Abstract
No abstract record available.
Inventors
- 👤 Peter Cooper Hewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:45
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/232
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) | 1908-01-31 | 1908-08-01 | 1909-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-01-31 | 1912-08-01 | 1913-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-01-31 | 1916-08-01 | 1917-01-31 | $7700.00 | Window Closed / Lapsed |