Patent US3761607A successfully refreshed from Google Patents.
Patent US2901728A successfully refreshed from Google Patents.
US2901728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supervisory control system
Assignee: North Electric Co
•
Filing: 1951-04-10
•
Granted: 1959-08-25
•
Expires: 1971-04-10
Abstract
No abstract record available.
Inventors
- 👤 Lemuel R Breese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:40
CPC Classifications
G; G08; G08B; G08B26/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1689294A
Cited
US1790189A
Cited
US2082152A
Cited
US2082465A
Cited
US2111352A
Cited
US2229249A
Cited
US2059204A
Cited
US2259561A
Cited
US2444078A
Cited
US2444243A
Cited
US2584739A
Cited
US2607843A
Cited
US2616959A
Cited
US2583088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |