US3588422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multifunction selector with automatically changing annotations
Assignee: Smiths Group PLC
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Filing: 1968-09-23
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Granted: 1971-06-28
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Expires: 1988-09-23
Abstract
Abstract ELECTRIC SWITCHES THAT ARE EACH OPERABLE TO PERFORM ANY OF A MULTIPLICITY OF FUNCTIONS IN AN AIRCRAFT NAVIGATION SYSTEM, ARE SPACED ALONG A ROTATABLE MEMBER THAT IS INSCRIBED CIRCUMFERENTIALLY WITH DIFFERENT SETS OF FUNCTION-ANNOTATIONS APPLICABLE TO THE SWITCHES. ROTATION OF THE MEMBER, BY MOTOR OR HAND, BRINGS ANY ONE OF THE ANNOTATION-SETS INTO VIEW AGAINST THE SWITCHES AND SETS CIRCUIT-SELECTORS IN ACCORDANCE WITH THE ANNOTATED-FUNCTIONS.
Inventors
- 👤 Edward William Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:35
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |