US904851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controller for electric drills.
Assignee: Chicago Pneumatic Tool Co LLC
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Filing: 1906-01-22
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Granted: 1908-11-24
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Expires: 1926-01-22
Abstract
No abstract record available.
Inventors
- 👤 William O Duntley
- 👤 Henry J Kimman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:36
CPC Classifications
H; H01; H01H; H01H25/00; H01H25/04; H01H25/041
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) | 1911-11-24 | 1912-05-25 | 1912-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-11-24 | 1916-05-25 | 1916-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-11-24 | 1920-05-25 | 1920-11-24 | $7700.00 | Window Closed / Lapsed |