US2547796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller skate
Assignee: Individual
•
Filing: 1946-09-06
•
Granted: 1951-04-03
•
Expires: 1966-09-06
Abstract
No abstract record available.
Inventors
- 👤 Swensson Carl Einar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:28
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US329829A
Cited
US617996A
Cited
US1489197A
Cited
US1544116A
Cited
US1673405A
Cited
US2206397A
Cited
US2233355A
Cited
US2304944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |