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Patent US2810026A successfully refreshed from Google Patents.
US2810026A
Expired / Lapsed
US
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Electric switching devices
Assignee: Individual
•
Filing: 1953-12-02
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Granted: 1957-10-15
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Expires: 1973-12-02
Abstract
No abstract record available.
Inventors
- 👤 Vigren Sten Daniel
- 👤 Broberg Walter Otto Wilhelm
- 👤 Zander Rolf Albin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:07
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/56; H01H50/58; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/26; H01H1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1879349A
Cited
DE603150C
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US2115836A
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US2178151A
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US2199508A
Cited
US2271813A
Cited
US2416736A
Cited
US2519731A
Cited
US2472709A
Cited
US2616993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |