US3420973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustment-free preassembled contact unit for multiple contact relays which may be completely prefabricated by mechanical operations
Assignee: Siemens AG
•
Filing: 1967-04-20
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Granted: 1969-01-07
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Expires: 1987-04-20
Abstract
No abstract record available.
Inventors
- 👤 Josef Fischer
- 👤 Herber Krautwald
- 👤 Helmut Schedele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:56
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/56; H01H50/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2348088A
Cited
US2665353A
Cited
US2838631A
Cited
US2959693A
Cited
US3242285A
Cited
US3329791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |