US3309792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching apparatus
Assignee: TEACHING MACHINES Inc
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Filing: 1964-01-09
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Granted: 1967-03-21
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Expires: 1984-01-09
Abstract
No abstract record available.
Inventors
- 👤 Donald T Tosti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:34
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A TEACHING APPARATUS COMPRISING A LEAF, SAID LEAF BEARING INDICIA REPRESENTING A PLURALITY OF STIMULI INCLUDING QUESTIONS ADAPTED TO EVOKE STUDENT RESPONSES AND ARRANGED IN FRAMES, MARKINGS OF PREDETERMINED SHAPE SEQUENTIALLY ARRANGED DESIGNATING THE ORDER OF CONSIDERATION OF THE STIMULI, A CODE DESIGNATION ADJOINING EACH STIMULUS AND ARRANGED AT RANDOM, EACH CODE DESIGNATION OF A SHAPE DIFFERENT FROM THE OTHERS, A CONFIRMATION FOR EACH STIMULUS, A MARK OF MATCHABLE CONFIGURATION WITH EACH CODE DESIGNATION DISPOSED ADJACENT CORRESPONDING
Claim 2
Dependent Claim
77 words
A TEACHING APPARATUS COMPRISING A LEAF, SAID LEAF BEARING INDICIA REPRESENTING A PLURALITY OF STIMULI INCLUDING QUESTIONS ADAPTED TO EVOKE STUDENT RESPONSES AND ARRANGED IN FRAMES, MARKINGS OF PREDETERMINED SHAPE SEQUENTIALLY ARRANGED DESIGNATING THE ORDER OF CONSIDERATION OF THE STIMULI, A CODE DESIGNATION ADJOINING EACH STIMULUS AND ARRANGED AT RANDOM, EACH CODE DESIGNATION OF A SHAPE DIFFERENT FROM THE OTHERS, A CONFIRMATION FOR EACH STIMULUS, A MARK OF MATCHABLE CONFIGURATION WITH EACH CODE DESIGNATION DISPOSED ADJACENT CORRESPONDING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |