US2492423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic puck projector
Assignee: Individual
•
Filing: 1946-04-06
•
Granted: 1949-12-27
•
Expires: 1966-04-06
Abstract
No abstract record available.
Inventors
- 👤 Gray Howard Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:03
CPC Classifications
A; A63; A63F; A63F7/00; A63F7/06; A63F7/068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US706463A
Cited
GB190213485A
Cited
US928619A
Cited
US2036076A
Cited
GB448133A
Cited
FR787570A
Cited
US2101764A
Cited
US2239395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |