US2200235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device and system
Assignee: EA Laboratories Inc
•
Filing: 1940-02-21
•
Granted: 1940-05-07
•
Expires: 1960-02-21
Abstract
No abstract record available.
Inventors
- 👤 John R Aufiero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:59
CPC Classifications
G; G08; G08B; G08B3/00; G08B3/10; H; H01; H01H; H01H3/00; H01H3/22; H01H3/26
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) | 1943-05-07 | 1943-11-06 | 1944-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-07 | 1947-11-06 | 1948-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-07 | 1951-11-06 | 1952-05-07 | $7700.00 | Window Closed / Lapsed |