US3307274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching apparatus
Assignee: Individual
•
Filing: 1964-06-04
•
Granted: 1967-03-07
•
Expires: 1984-06-04
Abstract
No abstract record available.
Inventors
- 👤 Glaser David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:55
CPC Classifications
G; G09; G09B; G09B5/00; G09B5/06; G09B5/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
TEACHING APPARATUS INCLUDING A MESSAGE-CARRIER WHICH CARRIES A MESSAGE IN A PLURALITY OF DIFFERENT FORMS, A MESSAGE-READER MOUNTED IN OPERATIVE RELATION WITH SAID MESSAGE-CARRIER, DRIVE MEANS COUPLED TO SAID MESSAGE-READER FOR DRIVING SAID READER ALONG FIRST AND SECOND PATHS OF TRAVEL BACK AND FORTH ADJACENT TO SAID MESSAGE-CARRIER, AND
Claim 2
Dependent Claim
49 words
TEACHING APPARATUS INCLUDING A MESSAGE-CARRIER WHICH CARRIES A MESSAGE IN A PLURALITY OF DIFFERENT FORMS, A MESSAGE-READER MOUNTED IN OPERATIVE RELATION WITH SAID MESSAGE-CARRIER, DRIVE MEANS COUPLED TO SAID MESSAGE-READER FOR DRIVING SAID READER ALONG FIRST AND SECOND PATHS OF TRAVEL BACK AND FORTH ADJACENT TO SAID MESSAGE-CARRIER, AND
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |