US3255355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic two beam photoelectric radiation comparison apparatus
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1963-03-22
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Granted: 1966-06-07
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Expires: 1983-03-22
Abstract
No abstract record available.
Inventors
- 👤 Frenk Helmuth
- 👤 Rzeznik Jerry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:45
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/10; G01J1/20; G01J1/34; G01J1/36; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
PHOTOELECTRIC RADIATION COMPARISON APPARATUS COMPRISING: MEANS PRODUCING ALTERNATIVELY TWO RADIATION BEAMS; PHOTOELECTRIC RECEIVER MEANS RESPONSIVE TO SAID RADIATION BEAMS AND PRODUCING CORRESPONDING ELECTRIC CURRENTS; ELECTRIC MEANS CONNECTED TO SAID RECEIVER MEANS FOR INTEGRATING SAID CURRENTS AND PRODUCING A TRIGGER PULSE WHEN A PREDETERMINED INTEGRATED VALUE HAS BEEN REACHED; MEANS FOR FEEDING SAID TRIGGER PULSE TO SAID RADIATION BEAM PRODUCING MEANS FOR EFFECTING ALTERNATION OF THE LATTER; AND MEANS RESPONSIVE TO ANY UNBALANCE BETWEEN TWO SUCCEEDING TIME INTERVALS AS DEFINED BETWEEN TWO SUCCEEDING TRIGGER PULSES, FOR CONTROLLING THE RADIATION INTENSITY OF ONE OF SAID BEAMS AS IT IS EFFECTIVE IN SAID RECEIVER MEANS.
Claim 2
Dependent Claim
102 words
PHOTOELECTRIC RADIATION COMPARISON APPARATUS COMPRISING: MEANS PRODUCING ALTERNATIVELY TWO RADIATION BEAMS; PHOTOELECTRIC RECEIVER MEANS RESPONSIVE TO SAID RADIATION BEAMS AND PRODUCING CORRESPONDING ELECTRIC CURRENTS; ELECTRIC MEANS CONNECTED TO SAID RECEIVER MEANS FOR INTEGRATING SAID CURRENTS AND PRODUCING A TRIGGER PULSE WHEN A PREDETERMINED INTEGRATED VALUE HAS BEEN REACHED; MEANS FOR FEEDING SAID TRIGGER PULSE TO SAID RADIATION BEAM PRODUCING MEANS FOR EFFECTING ALTERNATION OF THE LATTER; AND MEANS RESPONSIVE TO ANY UNBALANCE BETWEEN TWO SUCCEEDING TIME INTERVALS AS DEFINED BETWEEN TWO SUCCEEDING TRIGGER PULSES, FOR CONTROLLING THE RADIATION INTENSITY OF ONE OF SAID BEAMS AS IT IS EFFECTIVE IN SAID RECEIVER MEANS.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |