US2842720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit control system and controller therefor
Assignee: Ohio Brass Co
•
Filing: 1953-11-05
•
Granted: 1958-07-08
•
Expires: 1973-11-05
Abstract
No abstract record available.
Inventors
- 👤 Elmo F Huston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:00
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/087; H02H3/44; H02H3/445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1184846A
Cited
US1427369A
Cited
US1671471A
Cited
US1730881A
Cited
US1685949A
Cited
FR644649A
Cited
US2276675A
Cited
US2637843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |