US2579841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch construction
Assignee: Individual
•
Filing: 1947-07-08
•
Granted: 1951-12-25
•
Expires: 1967-07-08
Abstract
No abstract record available.
Inventors
- 👤 Ludwig Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:36
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2201751A
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US2201743A
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US2175098A
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US2160713A
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US2231976A
Cited
US2248201A
Cited
US2292084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |