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US2631861A
Expired / Lapsed
US
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Roller skate attachment
Assignee: Individual
•
Filing: 1949-10-13
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Granted: 1953-03-17
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Expires: 1969-10-13
Abstract
No abstract record available.
Inventors
- 👤 John G Daniska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:24
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US485459A
Cited
US1317222A
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US2408214A
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US2269362A
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US2285373A
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US2315342A
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US2516644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |