Patent US2248030A successfully refreshed from Google Patents.
Patent US3334236A successfully refreshed from Google Patents.
US3334236A
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Photo-optical light pen and amplifier
Assignee: Unisys Corp
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Filing: 1964-11-23
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Granted: 1967-08-01
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Expires: 1984-11-23
Abstract
No abstract record available.
Inventors
- 👤 James R Bacon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:53
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/0354; G06F3/03542; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10881
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
PHOTO-OPTICAL LIGHT RESPONSIVE CONTROL APPARATUS COMPRISING: (A) A FIRST OPTICAL SYSTEM, (B) A SECOND OPTICAL SYSTEM, FIRST SYSTEM, (C) SAID FIRST OPTICAL SYSTEM INCLUDING A SOURCE OF LIGHT AND LENS MEANS FOR FOCUSING LIGHT UPON A DISCRETE AREA AT A PREDETERMINED DISTANCE FROM SAID SECOND OPTICAL SYSTEM, (D) SAID SECOND OPTICAL SYSTEM INCLUDING A LIGHT RESPONSIVE MEMBER AND LESS MEANS EFFECTIVE TO FOCUS DIRECT LIGHT FROM AN OBJECT AREA ADJACENT TO BUT DISPLAYED SAID PREDETERMINED DISTANCE FROM SAID SECOND OPTICAL SYSTEM, AND (E) MEANS COMPRISING A PORTION OF THE LIGHT FROM SAID SOURCE FOR BIASING SAID LIGHT RESPONSIVE MEMBER FROM A STANDBY CONDITION INTO A HIGHLY CONDUCTING CONDITION EFFECTIVE TO INCREASE THE GAIN OF SAID LAST NAMED MEMBER.
Claim 2
Dependent Claim
118 words
PHOTO-OPTICAL LIGHT RESPONSIVE CONTROL APPARATUS COMPRISING: (A) A FIRST OPTICAL SYSTEM, (B) A SECOND OPTICAL SYSTEM, FIRST SYSTEM, (C) SAID FIRST OPTICAL SYSTEM INCLUDING A SOURCE OF LIGHT AND LENS MEANS FOR FOCUSING LIGHT UPON A DISCRETE AREA AT A PREDETERMINED DISTANCE FROM SAID SECOND OPTICAL SYSTEM, (D) SAID SECOND OPTICAL SYSTEM INCLUDING A LIGHT RESPONSIVE MEMBER AND LESS MEANS EFFECTIVE TO FOCUS DIRECT LIGHT FROM AN OBJECT AREA ADJACENT TO BUT DISPLAYED SAID PREDETERMINED DISTANCE FROM SAID SECOND OPTICAL SYSTEM, AND (E) MEANS COMPRISING A PORTION OF THE LIGHT FROM SAID SOURCE FOR BIASING SAID LIGHT RESPONSIVE MEMBER FROM A STANDBY CONDITION INTO A HIGHLY CONDUCTING CONDITION EFFECTIVE TO INCREASE THE GAIN OF SAID LAST NAMED MEMBER.
References Cited (Backward Citations)
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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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |