Patent US2855980A successfully refreshed from Google Patents.
Patent US3307372A successfully refreshed from Google Patents.
US3307372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skating rink
Assignee: Individual
•
Filing: 1965-07-29
•
Granted: 1967-03-07
•
Expires: 1985-07-29
Abstract
No abstract record available.
Inventors
- 👤 Kenison Alphonse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:44
CPC Classifications
F; F25; F25C; F25C3/00; F25C3/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |