Patent US2868554A successfully refreshed from Google Patents.
US2868554A
Expired / Lapsed
US
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Tandem wheel roller skate
Assignee: Individual
•
Filing: 1955-11-07
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Granted: 1959-01-13
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Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Ring William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:41
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/04; A63C17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US110858A
Cited
GB189421999A
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US1609612A
Cited
US1854188A
Cited
US2079185A
Cited
US1996671A
Cited
US2122066A
Cited
FR1049182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |