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US2831084A
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US
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Hydraulic electric light switch
Assignee: Individual
•
Filing: 1954-02-05
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Granted: 1958-04-15
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Expires: 1974-02-05
Abstract
No abstract record available.
Inventors
- 👤 Swinarski Dan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:22
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/30; H01H3/00; H01H3/22; H01H3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1316372A
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US643405A
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US1088695A
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US1542931A
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US1951882A
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US2308261A
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US2450819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |