US1471859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control mechanism for electric switches
Assignee: Bishop & Babcock Co
•
Filing: 1920-08-25
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Granted: 1923-10-23
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Expires: 1940-08-25
Abstract
No abstract record available.
Inventors
- 👤 Hal T Patton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:12
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/32; Y; Y10; Y10S; Y10S200/00; Y10S200/28
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) | 1926-10-22 | 1927-04-23 | 1927-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-22 | 1931-04-23 | 1931-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-22 | 1935-04-23 | 1935-10-23 | $7700.00 | Window Closed / Lapsed |