US3273274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectively illuminated indicating devices
Assignee: KGM Electronics Ltd
•
Filing: 1964-06-03
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Granted: 1966-09-20
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Expires: 1984-06-03
Abstract
No abstract record available.
Inventors
- 👤 Pearce John Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:25
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0081; G02B6/0086; G02B6/0091; G02B6/0013; G02B6/0023; G02B6/0031; G02B6/0075; G02B6/0076; G09; G09F; G09F9/00; G09F9/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A SELECTIVELY ILLUMINATED INDICATING DEVICE COMPRISING A LIGHT SOURCE, AT LEAST TWO LIGHT TRANSMITTING PLATES WITH INDICIA ON THEIR FACES AND DISPOSED IN STACKED RELATION, AND AN INDEPENDENTLY MOVEABLE MIRROR WHICH REFLECTS THE LIGHT FROM THE SOURCE ONTO THE EDGE OF THE DESIRED PLATE TO ILLUMINATE THE ENTIRE PLATE AND MAKE ITS INDICIA VISIBLE.
Claim 2
Dependent Claim
54 words
A SELECTIVELY ILLUMINATED INDICATING DEVICE COMPRISING A LIGHT SOURCE, AT LEAST TWO LIGHT TRANSMITTING PLATES WITH INDICIA ON THEIR FACES AND DISPOSED IN STACKED RELATION, AND AN INDEPENDENTLY MOVEABLE MIRROR WHICH REFLECTS THE LIGHT FROM THE SOURCE ONTO THE EDGE OF THE DESIRED PLATE TO ILLUMINATE THE ENTIRE PLATE AND MAKE ITS INDICIA VISIBLE.
References Cited (Backward Citations)
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Cited
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Cited
US3138663A
Cited
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Cited
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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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |