US3522542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pushbutton channel selecting and voltage divider presetting unit
Assignee: Preh GmbH
•
Filing: 1965-09-30
•
Granted: 1970-08-04
•
Expires: 1985-09-30
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang Labude
- 👤 Karlheinz Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:23
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/72; H01H13/74; H01C; H01C10/00; H01C10/30; H01C10/32; H01C10/36; H01C10/38; H01C10/40; H01C10/42; H01C10/50; H01C17/00; H01C17/22; H03; H03J; H03J1/00; H03J1/06; H03J1/066; H03J5/00; H03J5/02; H03J5/0218; H01H3/00; H01H3/02; H01H3/0213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3162802A
Cited
US3029339A
Cited
US2972123A
Cited
US3307133A
Cited
US3284697A
Cited
US3354397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |