Patent US3399469A successfully refreshed from Google Patents.
US3399469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Answer entry and recording system
Assignee: EDEX CORP
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Filing: 1965-04-12
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Granted: 1968-09-03
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Nisbet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:38
CPC Classifications
G; G09; G09B; G09B7/00; G09B7/06; G09B7/07; G09B7/073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
AN ANSWER ENTRY AND RECORDING SYSTEM COMPRISING A PLURALITY OF PRINTING UNITS, EACH UNIT INCLUDING A PRINTING ELEMENT BEARING A PREDETERMINED ORDERED SEQUENCE OF DIFFERENT CHARACTERS TO BE PRINTED, AND HAVING MEANS FOR STEPPING THE PRINTING ELEMENT THROUGH SAID ORDERED SEQUENCE IN RESPONSE TO RECEIPT OF A RELATED ORDERED SEQUENCE OF PULSES TO DISPOSE SAID ELEMENT IN CONDITION FOR PRINTING ONE OF SAID CHARACTERS, A PULSE TRANSMISSION CHANNEL FOR EACH OF A PREDETERMINED NUMBER OF POSSIBLE ANSWERS TO BE MADE BY STUDENTS, A STUDENT STATION ASSOCIATED WITH EACH OF SAID PRINTING UNITS, MEANS AT EACH STUDENT STATION TO SELECTIVELY COUPLE ANY ONE OF SAID CHANNELS TO TRANSMIT PULSES TO THE ASSOCIATED PRINTING UNIT FOR SAID STATION SO AS TO MANIFEST A RESPONSE OF THE STUDENT, MEANS FOR APPLYING DIFFERENT NUMBERS OF PULSES CORRESPONDING TO THE SELECTABLE STUDENT ANSWERS TO EACH OF SAID CHANNELS TO CAUSE THOSE PRINTING ELEMENTS COUPLED THERETO TO BE CONDITIONED TO PRINT A RELATED CHARACTER, THE LAST NEMED MEANS THEREAFTER PROVIDING A PRINT SIGNAL, AND MEANS COOPERATING WITH SAID PRINT ELEMENTS AND OPERATIVELY RESPONSIVE TO SAID PRINT SIGNAL FROM THE LAST NAMED MEANS TO RECORD THE SELECTED ANSWERS OF THE STUDENTS.
Claim 2
Dependent Claim
194 words
AN ANSWER ENTRY AND RECORDING SYSTEM COMPRISING A PLURALITY OF PRINTING UNITS, EACH UNIT INCLUDING A PRINTING ELEMENT BEARING A PREDETERMINED ORDERED SEQUENCE OF DIFFERENT CHARACTERS TO BE PRINTED, AND HAVING MEANS FOR STEPPING THE PRINTING ELEMENT THROUGH SAID ORDERED SEQUENCE IN RESPONSE TO RECEIPT OF A RELATED ORDERED SEQUENCE OF PULSES TO DISPOSE SAID ELEMENT IN CONDITION FOR PRINTING ONE OF SAID CHARACTERS, A PULSE TRANSMISSION CHANNEL FOR EACH OF A PREDETERMINED NUMBER OF POSSIBLE ANSWERS TO BE MADE BY STUDENTS, A STUDENT STATION ASSOCIATED WITH EACH OF SAID PRINTING UNITS, MEANS AT EACH STUDENT STATION TO SELECTIVELY COUPLE ANY ONE OF SAID CHANNELS TO TRANSMIT PULSES TO THE ASSOCIATED PRINTING UNIT FOR SAID STATION SO AS TO MANIFEST A RESPONSE OF THE STUDENT, MEANS FOR APPLYING DIFFERENT NUMBERS OF PULSES CORRESPONDING TO THE SELECTABLE STUDENT ANSWERS TO EACH OF SAID CHANNELS TO CAUSE THOSE PRINTING ELEMENTS COUPLED THERETO TO BE CONDITIONED TO PRINT A RELATED CHARACTER, THE LAST NEMED MEANS THEREAFTER PROVIDING A PRINT SIGNAL, AND MEANS COOPERATING WITH SAID PRINT ELEMENTS AND OPERATIVELY RESPONSIVE TO SAID PRINT SIGNAL FROM THE LAST NAMED MEANS TO RECORD THE SELECTED ANSWERS OF THE STUDENTS.
References Cited (Backward Citations)
US3300876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |