US3345758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational device
Assignee: Individual
•
Filing: 1966-02-15
•
Granted: 1967-10-10
•
Expires: 1986-02-15
Abstract
No abstract record available.
Inventors
- 👤 Charles A Morchand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
G; G09; G09B; G09B7/00; G09B7/06; G09B7/07; G09B7/073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN AN EDUCATIONAL DEVICE A LOCAL UNIT COMPRISING A PLURALITY OF BANKS OF SELECTION SWITCHES, LIKE ORDERED ONES OF SWITCHES IN THE SEVERAL BANKS BEING INTERCONNECTED TO ONE OF A PLURALITY OF QUESTION-ANSWER SIGNAL PROVIDING INPUT LINES, STEPPING SWITCH MEANS HAVING AT LEAST ONE COMMOM CONTACT AND A PLURALITY OF SELECTABLE CONTACTS, EACH IN A GROUP OF SELECTABLE CONTACTS BEING CONNECTED TO THE SEVERAL CONTACTS OF A SELECTION SWITCH BANK ASSOCIATED WITH SUCH SELECTABLE CONTACT, AND PRESENTATION MEANS CONNECTED TO A COMMON CONTACT, WHEREBY QUESTIONS AND ANSWERS MAY
Claim 2
Dependent Claim
88 words
IN AN EDUCATIONAL DEVICE A LOCAL UNIT COMPRISING A PLURALITY OF BANKS OF SELECTION SWITCHES, LIKE ORDERED ONES OF SWITCHES IN THE SEVERAL BANKS BEING INTERCONNECTED TO ONE OF A PLURALITY OF QUESTION-ANSWER SIGNAL PROVIDING INPUT LINES, STEPPING SWITCH MEANS HAVING AT LEAST ONE COMMOM CONTACT AND A PLURALITY OF SELECTABLE CONTACTS, EACH IN A GROUP OF SELECTABLE CONTACTS BEING CONNECTED TO THE SEVERAL CONTACTS OF A SELECTION SWITCH BANK ASSOCIATED WITH SUCH SELECTABLE CONTACT, AND PRESENTATION MEANS CONNECTED TO A COMMON CONTACT, WHEREBY QUESTIONS AND ANSWERS MAY
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |