Patent US2660811A successfully refreshed from Google Patents.
US2660811A
Expired / Lapsed
US
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Treadmill for walking toys
Assignee: ARTISAN NOVELTY Co
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Filing: 1950-10-02
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Granted: 1953-12-01
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Expires: 1970-10-02
Abstract
No abstract record available.
Inventors
- 👤 Howard M Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:31
CPC Classifications
A; A63; A63H; A63H11/00; A63H11/18; A63H3/00; A63H3/36; A63H3/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307121A
Cited
US1187708A
Cited
US1529004A
Cited
DE473169C
Cited
US1766089A
Cited
GB382340A
Cited
US2102038A
Cited
US2364253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |