US1898182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control system and apparatus therefor
Assignee: Brown Instruments Co
•
Filing: 1924-03-25
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Granted: 1933-02-21
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Expires: 1944-03-25
Abstract
No abstract record available.
Inventors
- 👤 Harrison Thomas Randolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:19
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/2037; G05D23/2039
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) | 1936-02-21 | 1936-08-22 | 1937-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-02-21 | 1940-08-22 | 1941-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-02-21 | 1944-08-22 | 1945-02-21 | $7700.00 | Window Closed / Lapsed |