US2878651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice rink construction
Assignee: Individual
•
Filing: 1954-12-21
•
Granted: 1959-03-24
•
Expires: 1974-12-21
Abstract
No abstract record available.
Inventors
- 👤 John A Heinzelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:46
CPC Classifications
F; F25; F25C; F25C3/00; F25C3/02; E; E01; E01C; E01C13/00; E01C13/10; E01C13/102; E01C13/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US2301780A
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US2433546A
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US2411919A
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US2615308A
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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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |