US2920899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller skate with small turning radius
Assignee: Individual
•
Filing: 1958-04-03
•
Granted: 1960-01-12
•
Expires: 1978-04-03
Abstract
No abstract record available.
Inventors
- 👤 Albert J Crone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:45
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US339318A
Cited
DE494395C
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DE484159C
Cited
US2166767A
Cited
US2341576A
Cited
US2424072A
Cited
US2510722A
Cited
US2558696A
Cited
US2595751A
Cited
US2763490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |