US841232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric rheostat.
Assignee: Individual
•
Filing: 1905-07-26
•
Granted: 1907-01-15
•
Expires: 1925-07-26
Abstract
No abstract record available.
Inventors
- 👤 William F Dana
- 👤 Henderson W Knott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:58
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/16; G01D5/165; H; H01; H01C; H01C7/00; H01C7/10; H01C7/12
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) | 1910-01-14 | 1910-07-16 | 1911-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-01-14 | 1914-07-16 | 1915-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-01-14 | 1918-07-16 | 1919-01-15 | $7700.00 | Window Closed / Lapsed |