US3340623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arithmetic means for children
Assignee: Individual
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Filing: 1965-02-12
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Granted: 1967-09-12
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Expires: 1985-02-12
Abstract
No abstract record available.
Inventors
- 👤 Vito A Troffa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:28
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/02; G09B19/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A CHILD''S ARITHMETIC DEVICE COMPRISING: A BOARD MEMBER, A FIRST HORIZONTAL ROW OF LIGHTS EQUALLY SPACED ON SAID BOARD NEAR THE TOP THEREOF, FIRST, SECOND AND THIRD ROWS OF TERMINALS MOUNTED ON SAID BOARD AND EQUALLY SPACED UNDER SAID LIGHTS TO FORM VERTICAL ROWS EACH LIGHT BEING CONNECTED TO TERMINALS IN SAID FIRST AND SECOND HORIZONTAL ROWS SAID TERMINALS IN SAID VERTICAL ROWS IN SAID FIRST AND THIRD HORIZONTAL ROWS BEING CONNECTED TOGETHER, A PAIR OF CONDUCTIVE PROBES FASTENED TO SAID BOARD, A BATTERY CONNECTED IN SERIES WITH SAID PROBES, A ROTATABLE INDICATOR MOUNTED HORIZONTALLY ADJACENT SAID LIGHTS, SAID INDICATOR HAVING A PLURALITY OF SIDES, SAID INDICATOR HAVING A PLURALITY OF NUMBERS ON EACH SIDE ARRANGEMENT ACCORDING TO PREDETERMINED MULTIPLICATION TABLES, SAID PROBES BEING ADAPTED TO BE CONNECTED TO SAID TERMINALS IN PREDETERMINED MANNER TO LIGHT A PREDETERMINED ONE OF SAID LIGHTS TO INDICATE THE CORRECT ANSWER ON SAID INDICATOR.
Claim 2
Dependent Claim
150 words
A CHILD''S ARITHMETIC DEVICE COMPRISING: A BOARD MEMBER, A FIRST HORIZONTAL ROW OF LIGHTS EQUALLY SPACED ON SAID BOARD NEAR THE TOP THEREOF, FIRST, SECOND AND THIRD ROWS OF TERMINALS MOUNTED ON SAID BOARD AND EQUALLY SPACED UNDER SAID LIGHTS TO FORM VERTICAL ROWS EACH LIGHT BEING CONNECTED TO TERMINALS IN SAID FIRST AND SECOND HORIZONTAL ROWS SAID TERMINALS IN SAID VERTICAL ROWS IN SAID FIRST AND THIRD HORIZONTAL ROWS BEING CONNECTED TOGETHER, A PAIR OF CONDUCTIVE PROBES FASTENED TO SAID BOARD, A BATTERY CONNECTED IN SERIES WITH SAID PROBES, A ROTATABLE INDICATOR MOUNTED HORIZONTALLY ADJACENT SAID LIGHTS, SAID INDICATOR HAVING A PLURALITY OF SIDES, SAID INDICATOR HAVING A PLURALITY OF NUMBERS ON EACH SIDE ARRANGEMENT ACCORDING TO PREDETERMINED MULTIPLICATION TABLES, SAID PROBES BEING ADAPTED TO BE CONNECTED TO SAID TERMINALS IN PREDETERMINED MANNER TO LIGHT A PREDETERMINED ONE OF SAID LIGHTS TO INDICATE THE CORRECT ANSWER ON SAID INDICATOR.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |