US2590002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inclined plane magnetic game
Assignee: Individual
•
Filing: 1948-02-18
•
Granted: 1952-03-18
•
Expires: 1968-02-18
Abstract
No abstract record available.
Inventors
- 👤 George E Frazier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:56
CPC Classifications
A; A63; A63F; A63F7/00; A63F7/0088; A63F7/22; A63F7/36; A63F2007/3674; A63F2007/3677
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US336179A
Cited
US606744A
Cited
US920895A
Cited
GB191500526A
Cited
US1384057A
Cited
US1879511A
Cited
US2101201A
Cited
US2101764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |