US3273262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching device
Assignee: Milton Bradley Co
•
Filing: 1964-07-27
•
Granted: 1966-09-20
•
Expires: 1984-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Luke J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:25
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A TEACHING DEVICE COMPRISING IN COMBINATION, A FRAME, A PLURALITY OF VERTICALLY-DISPOSED DENOMINATIONALLYORDERED FLEXIBLE METAL RODS CARRIED BY SAID FRAME AND FORMING SPACED ROWS, A GROUP OF BEADS STRUND ON EACH SAID ROD FOR SLIDING MOVEMENT RELATIVE THERETO, A SIGNAL MEANS SLIDEABLY DISPOSED ON EACH SAID ROD AND RESTING ON THE UPPERMOST BEAD OF EACH GROUP THEREOF, SAID SIGNAL MEANS EACH CARRYING NUMERICAL INDICIA INDICATING THE NUM-
Claim 2
Dependent Claim
67 words
A TEACHING DEVICE COMPRISING IN COMBINATION, A FRAME, A PLURALITY OF VERTICALLY-DISPOSED DENOMINATIONALLYORDERED FLEXIBLE METAL RODS CARRIED BY SAID FRAME AND FORMING SPACED ROWS, A GROUP OF BEADS STRUND ON EACH SAID ROD FOR SLIDING MOVEMENT RELATIVE THERETO, A SIGNAL MEANS SLIDEABLY DISPOSED ON EACH SAID ROD AND RESTING ON THE UPPERMOST BEAD OF EACH GROUP THEREOF, SAID SIGNAL MEANS EACH CARRYING NUMERICAL INDICIA INDICATING THE NUM-
References Cited (Backward Citations)
US692019A
Cited
US2457332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |