US2927798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible roller skate having resiliently mounted trucks
Assignee: Manning Manufacturing Corp
•
Filing: 1958-07-01
•
Granted: 1960-03-08
•
Expires: 1978-07-01
Abstract
No abstract record available.
Inventors
- 👤 Charles E Jones
- 👤 William G Crowle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:23
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US287820A
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US1017551A
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US1588676A
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US1578811A
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US1749139A
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US2137330A
Cited
US2190316A
Cited
US2531357A
Cited
US2841405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |