US2421267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical switching device
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1943-08-05
•
Granted: 1947-05-27
•
Expires: 1963-08-05
Abstract
No abstract record available.
Inventors
- 👤 Huber Jakob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:27
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/50; H01H2001/0005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US577447A
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US1320871A
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US1473711A
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US1909037A
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US2185166A
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US2253009A
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US2331255A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-26 | 1950-11-25 | 1951-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-26 | 1954-11-25 | 1955-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-26 | 1958-11-25 | 1959-05-27 | $7700.00 | Window Closed / Lapsed |