US2658971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric contact device
Assignee: Fkg Fritz Kesselring Geratebau AG
•
Filing: 1949-09-16
•
Granted: 1953-11-10
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Expires: 1969-09-16
Abstract
No abstract record available.
Inventors
- 👤 Wettstein Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:35
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/60; H01H1/00; H01H1/12; H01H1/14; H01H1/20; H01H1/2083; H01H1/50; H01H50/16; H01H50/36; H01H2050/362; H01H9/00; H01H9/54; H01H9/541
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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AT124946B
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US1900256A
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US2235171A
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US2283340A
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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) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |