Patent US3107435A successfully refreshed from Google Patents.
US3107435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching and testing machines
Assignee: Individual
•
Filing: 1962-02-05
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Granted: 1963-10-22
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Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Burrhus F Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:31
CPC Classifications
G; G09; G09B; G09B3/00; G09B3/02; G09B3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A TEACHING AND TESTING MACHINE IN WHICH A SEPARATE ANSWER STRIP IS MOVED IN PHASE WITH A QUESTION STRIP CARRYING PROGRAMMED MATERIAL, THE MACHINE HAVING A QUESTION-AND-ANSWER STATION THROUGH WHICH THE ANSWER STRIP AND THE QUESTION STRIP ARE MOVED AND AT WHICH SUCCESSIVE PORTIONS OF SAID STRIPS ARE VISIBLE TO THE USER OF THE MACHINE, THE ANSWER STRIP BEING ACCESSIBLE TO SAID USER AT SAID STATION FOR THE PURPOSE OF MARKING THEREON
Claim 2
Dependent Claim
73 words
IN A TEACHING AND TESTING MACHINE IN WHICH A SEPARATE ANSWER STRIP IS MOVED IN PHASE WITH A QUESTION STRIP CARRYING PROGRAMMED MATERIAL, THE MACHINE HAVING A QUESTION-AND-ANSWER STATION THROUGH WHICH THE ANSWER STRIP AND THE QUESTION STRIP ARE MOVED AND AT WHICH SUCCESSIVE PORTIONS OF SAID STRIPS ARE VISIBLE TO THE USER OF THE MACHINE, THE ANSWER STRIP BEING ACCESSIBLE TO SAID USER AT SAID STATION FOR THE PURPOSE OF MARKING THEREON
References Cited (Backward Citations)
US2690621A
Cited
US2987828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |