US2420156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for electromagnetic deflection of a cathode-ray
Assignee: Hartford National Bank and Trust Co
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Filing: 1943-03-23
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Granted: 1947-05-06
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Expires: 1963-03-23
Abstract
No abstract record available.
Inventors
- 👤 Harold Van Suchtelen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-05 | 1950-11-04 | 1951-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-05 | 1954-11-04 | 1955-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-05 | 1958-11-04 | 1959-05-06 | $7700.00 | Window Closed / Lapsed |