US2996896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable skating rink
Assignee: Individual
•
Filing: 1956-01-23
•
Granted: 1961-08-22
•
Expires: 1976-01-23
Abstract
No abstract record available.
Inventors
- 👤 Ford L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:09
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/10; E01C13/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR389447A
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US1918437A
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CH182341A
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US2483789A
Cited
US2433211A
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US2616096A
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US2628364A
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US2767755A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |