US2543248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the medical treatment of persons with high-frequency energy
Assignee: Hartford National Bank and Trust Co
•
Filing: 1946-07-15
•
Granted: 1951-02-27
•
Expires: 1966-07-15
Abstract
No abstract record available.
Inventors
- 👤 Ledeboer Johan Marie
- 👤 Fransen Jacobus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:49
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2105096A
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US2076289A
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US2099511A
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US2114345A
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US2114036A
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US2261153A
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US2333760A
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US2381496A
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US2381057A
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US2376667A
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US2473188A
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US2415799A
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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) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |