Patent US3187442A successfully refreshed from Google Patents.
US3187442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational device
Assignee: Individual
•
Filing: 1961-06-27
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Granted: 1965-06-08
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Expires: 1981-06-27
Abstract
No abstract record available.
Inventors
- 👤 Hertsche Stacy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:26
CPC Classifications
G; G09; G09B; G09B7/00; G09B7/06; G09B7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A TEACHING MACHINE COMPRISING AN OPTICAL SYSTEM FOR VISUALLY DISPLAYING PHOTOGRAPHICALLY RECORDED INFORMATION TO A STUDENT; MEANS FOR POSITIONING AN INFORMATION CARD INCLUDING A PHOTOGRAPH IN SAID OPTICAL SYSTEM; A PLURALITY OF ELECTRICAL CONTACTS ADJACENT SAID POSITIONING MEANS; A PLURALITY OF SELECTOR SWITCH MEANS, SAID SELECTOR SWITCH MEANS BEING OPERABLE BY THE STUDENT IN RESPONSE TO INFORMATION ON THE INFORMATION CARD; ELECTRICAL CIRCUIT MEANS CARRIED BY SAID CARD AND POSITIONED THEREBY BETWEEN SAID PLURALITY OF SELECTOR SWITCH MEANS AND SAID ELECTRICAL CONTACTS; AND MEANS OPERABLE IN RESPONSE TO OPERATION OF ONE OF SAID SELECTOR SWITCH MEANS TO ACTUATE SAID POSITIONING MEANS TO REMOVE ONE CARD AND REPLACE IT WITH ANOTHER CARD; THE SELECTION OF SAID OTHER CARD BEING IN ACCORDANCE WITH SAID ELECTRICAL CIRCUIT MEANS ON THE FIRST PRESENTED CARD.
Claim 2
Dependent Claim
130 words
A TEACHING MACHINE COMPRISING AN OPTICAL SYSTEM FOR VISUALLY DISPLAYING PHOTOGRAPHICALLY RECORDED INFORMATION TO A STUDENT; MEANS FOR POSITIONING AN INFORMATION CARD INCLUDING A PHOTOGRAPH IN SAID OPTICAL SYSTEM; A PLURALITY OF ELECTRICAL CONTACTS ADJACENT SAID POSITIONING MEANS; A PLURALITY OF SELECTOR SWITCH MEANS, SAID SELECTOR SWITCH MEANS BEING OPERABLE BY THE STUDENT IN RESPONSE TO INFORMATION ON THE INFORMATION CARD; ELECTRICAL CIRCUIT MEANS CARRIED BY SAID CARD AND POSITIONED THEREBY BETWEEN SAID PLURALITY OF SELECTOR SWITCH MEANS AND SAID ELECTRICAL CONTACTS; AND MEANS OPERABLE IN RESPONSE TO OPERATION OF ONE OF SAID SELECTOR SWITCH MEANS TO ACTUATE SAID POSITIONING MEANS TO REMOVE ONE CARD AND REPLACE IT WITH ANOTHER CARD; THE SELECTION OF SAID OTHER CARD BEING IN ACCORDANCE WITH SAID ELECTRICAL CIRCUIT MEANS ON THE FIRST PRESENTED CARD.
References Cited (Backward Citations)
US2084848A
Cited
US2484642A
Cited
US2564089A
Cited
US2997793A
Cited
US2965975A
Cited
US2909851A
Cited
US3052041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |