US877258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic regulating device.
Assignee: General Electric Vapor Lamp Co
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Filing: 1905-06-16
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Granted: 1908-01-21
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Expires: 1925-06-16
Abstract
No abstract record available.
Inventors
- 👤 Percy H Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:52
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/21; H02M7/217
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) | 1911-01-20 | 1911-07-22 | 1912-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-01-20 | 1915-07-22 | 1916-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-01-20 | 1919-07-22 | 1920-01-21 | $7700.00 | Window Closed / Lapsed |