US3238343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated three-way switch
Assignee: Harvey Hubbell Inc
•
Filing: 1964-04-17
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Granted: 1966-03-01
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Expires: 1984-04-17
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:56
CPC Classifications
H; H01; H01H; H01H21/00; H01H21/02; H01H21/025; H01H21/18; H01H21/22; H01H21/24; H01H21/245
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
A LOAD CONTROLLING CIRCUIT COMPRISING: FIRST AND SECOND THREE-WAY SWITCHES CONNECTED TO CONTROL AN ELECTRICAL LOAD ENERGIZED FROM A POWER SOURCE; A PANEL POSITIONED IN AN OPENING IN AT LEAST ONE OF SAID SWITCHES; PUSH BUTTON
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |