Patent US2687304A successfully refreshed from Google Patents.
US2687304A
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US
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Racing game apparatus
Assignee: JOHN K NORTHROP
•
Filing: 1949-09-13
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Granted: 1954-08-24
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Expires: 1969-09-13
Abstract
No abstract record available.
Inventors
- 👤 John K Northrop
- 👤 John H Northrop
- 👤 Nagy Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:40
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/12
Claims Analysis
Total Claims: 0
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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) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |