Patent US3403249A successfully refreshed from Google Patents.
US3403249A
Expired / Lapsed
US
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Battery powered signal unit
Assignee: Union Carbide Corp
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Filing: 1965-12-22
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Granted: 1968-09-24
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Expires: 1985-12-22
Abstract
No abstract record available.
Inventors
- 👤 Roswell J Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:15
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; F; F21; F21L; F21L4/00; H01M50/00; H01M50/20; H01M50/204; H01M50/247; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
AN EXPENDABLE BATTERY POWERED LANTERN ADAPTED TO REPLACAE AN OIL LAMP OF A CONVENTIONAL RAILROAD SWITCH LAMP ASSEMBLY HAVING AN OPEN TOP HOUSING WITH A PLURALITY OF TRANSLUCENT WINDOWS COMPRISING IN COMBINATION, A PAIR OF CELLS AXIALLY ALIGNED AND DISPOSED PART FROM EACH OTHER AND DEFINING A PREDETERMINED SPACE THEREBETWEEN, LAMP MEANS POSITIONED WITHIN SAID SPACE, MEANS FOR ELECTRICALLY AND MECHANICALLY CONNECTING SAID CELLS AND SAID LAMP MEANS AS A COMPACT REPLACEABLE UNITARY ASSEMBLY FOR RE-
Claim 2
Dependent Claim
76 words
AN EXPENDABLE BATTERY POWERED LANTERN ADAPTED TO REPLACAE AN OIL LAMP OF A CONVENTIONAL RAILROAD SWITCH LAMP ASSEMBLY HAVING AN OPEN TOP HOUSING WITH A PLURALITY OF TRANSLUCENT WINDOWS COMPRISING IN COMBINATION, A PAIR OF CELLS AXIALLY ALIGNED AND DISPOSED PART FROM EACH OTHER AND DEFINING A PREDETERMINED SPACE THEREBETWEEN, LAMP MEANS POSITIONED WITHIN SAID SPACE, MEANS FOR ELECTRICALLY AND MECHANICALLY CONNECTING SAID CELLS AND SAID LAMP MEANS AS A COMPACT REPLACEABLE UNITARY ASSEMBLY FOR RE-
References Cited (Backward Citations)
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US1877785A
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US2312649A
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US2344221A
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US2629045A
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US2938064A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |