Patent DE855319C successfully refreshed from Google Patents.
Patent US3580731A successfully refreshed from Google Patents.
Patent US3545230A successfully refreshed from Google Patents.
Patent US2613352A successfully refreshed from Google Patents.
Patent US4889132A successfully refreshed from Google Patents.
Patent US2390793A successfully refreshed from Google Patents.
US2390793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Brown Instruments Co
•
Filing: 1942-06-13
•
Granted: 1945-12-11
•
Expires: 1962-06-13
Abstract
No abstract record available.
Inventors
- 👤 Harry S Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:37
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/013
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1948-12-10 | 1949-06-11 | 1949-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-10 | 1953-06-11 | 1953-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-10 | 1957-06-11 | 1957-12-11 | $7700.00 | Window Closed / Lapsed |