US3217428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching laboratory
Assignee: Individual
•
Filing: 1963-07-24
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Granted: 1965-11-16
•
Expires: 1983-07-24
Abstract
No abstract record available.
Inventors
- 👤 Stuart M Spaulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:25
CPC Classifications
G; G09; G09B; G09B5/00; G09B5/08; G09B5/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A TEACHING LABORATORY HAVING A TEACHER POSITION AND A PLURALITY OF STUDENT POSITIONS COMPRISING: A PLURALITY OF TEACHING SOURCES AT SAID TEACHER POSITION FOR PROVIDING TEACHING MATERIAL IN THE FORM OF ELECTRICAL SIGNALS; A PLURALITY OF CONDUCTING LEADS INTERCONNECTING SAID TEACHER POSITION WITH SAID PLURALITY OF STUDENT POSITIONS; MEANS AT SAID TEACHER POSITION FOR CONNECTING ANY OF SAID PLURALITY OF CONDUCTING LEADS SELECTIVELY TO EACH OF SAID PLURALITY OF STUDENT POSITIONS; AND MEANS AT SAID TEACHER POSITION FOR SELECTIVELY CONNECTING ANY OF SAID PLURALITY OF TEACHING SOURCES TO ANY OF SAID PLURALITY OF CONDUCTING LEADS SO THAT A TEACHER MAY SELECTIVELY PROVIDE EACH STUDENT POSITION WITH ANY COMBINATION OF DIFFERENT TEACHING MATERIALS.
References Cited (Backward Citations)
US3066245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |