US779889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible-current apparatus for condensers.
Assignee: GEORGE WINFIELD WILSON
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Filing: 1904-03-14
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Granted: 1905-01-10
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Expires: 1924-03-14
Abstract
No abstract record available.
Inventors
- 👤 John Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:57
CPC Classifications
F; F28; F28B; F28B1/00; F28B1/02; Y; Y10; Y10S; Y10S165/00; Y10S165/092; Y10S165/10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86839
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) | 1908-01-10 | 1908-07-11 | 1909-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-01-10 | 1912-07-11 | 1913-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-01-10 | 1916-07-11 | 1917-01-10 | $7700.00 | Window Closed / Lapsed |