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US3374331A
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Electrical coupling in which making and breaking of conductors is within casing filled with an insulating medium
Assignee: Calor Emag AG
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Filing: 1965-05-26
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Granted: 1968-03-19
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Expires: 1985-05-26
Abstract
No abstract record available.
Inventors
- 👤 Brockhaus Gerhard
- 👤 Dusseldorf Bezirk
- 👤 Leonhardt Gunter
- 👤 Weber Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:51
CPC Classifications
H; H02; H02B; H02B13/00; H02B13/02; H02B13/035; H02B13/0358; H02B11/00; H02B11/02; H02B11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2010714A
Cited
US2647939A
Cited
US2857557A
Cited
FR1241785A
Cited
DE1114876B
Cited
FR1308240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |