US2587855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illumination for ice skating rinks
Assignee: Individual
•
Filing: 1949-02-25
•
Granted: 1952-03-04
•
Expires: 1969-02-25
Abstract
No abstract record available.
Inventors
- 👤 Oscar F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:48
CPC Classifications
F; F21; F21V; F21V33/00; F21V33/006; A; A63; A63C; A63C19/00; A63C19/10; E; E01; E01C; E01C13/00; E01C13/10; E01C13/102; E01C13/105; F21S; F21S4/00; F21S4/20; F21S8/00; F21S8/02; F21S8/022; A63C2203/00; A63C2203/14; F21W; F21W2131/00; F21W2131/10; F21W2131/105; F25; F25C; F25C3/00; F25C3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US714233A
Cited
US1839479A
Cited
US1923807A
Cited
US2216220A
Cited
US2424064A
Cited
US2457619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |