US2461464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1947-11-14
•
Granted: 1949-02-08
•
Expires: 1967-11-14
Abstract
No abstract record available.
Inventors
- 👤 Aronstein Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:27
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J2229/00; H01J2229/89; H01J2229/8913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1691324A
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US1988931A
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US2018690A
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GB426789A
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GB426797A
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US2222414A
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US2251984A
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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) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |