Patent US2159024A successfully refreshed from Google Patents.
US3564757A
Expired / Lapsed
US
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Toy corn cob
Assignee: Individual
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Filing: 1968-08-08
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Granted: 1971-02-23
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Expires: 1988-08-08
Abstract
Abstract A SIMULATED CORN COB THAT IS TO BE EMPLOYED FOR EDUCATIONAL PURPOSES AND WHICH COMPREHENDS A MULTIPLICITY OF SECTIONS BEING DETACHABLY CONNECTED SO THAT THE DIFFERENT AREAS OF AN EAR OF CORN MAY BE DISCUSSED SEPARATELY AS THE APPROPRIATE SECTION IS DISASSEMBLED AND EXHIBIT SEPARATELY SO THAT THE DEGREES OF GROWTH MAY BE MADE MORE APPROPRIATELY TO THE STUDENT.
Inventors
- 👤 Richard W Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:02
CPC Classifications
A; A63; A63H; A63H33/00; A63F; A63F9/00; A63F9/06; A63F9/12; A63F9/1288; A63F2009/1292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |