Patent US2622234A successfully refreshed from Google Patents.
US2622234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical current converter with apparatus for monitoring the synchronously actuated switches
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1950-01-09
•
Granted: 1952-12-16
•
Expires: 1970-01-09
Abstract
No abstract record available.
Inventors
- 👤 Blatter Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:06
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/20; H02M1/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1529341A
Cited
US2188361A
Cited
US2242956A
Cited
US2465682A
Cited
US2557739A
Cited
US2557740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |