US2476534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage or current regulator
Assignee: ELECTRIC SORTING MACHINE Co
•
Filing: 1944-08-28
•
Granted: 1949-07-19
•
Expires: 1964-08-28
Abstract
No abstract record available.
Inventors
- 👤 David C Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:56
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1936692A
Cited
US1809625A
Cited
DE643506C
Cited
US2029267A
Cited
US1926280A
Cited
US2234110A
Cited
US2210393A
Cited
US2362769A
Cited
US2416922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |