US2438875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical treatment apparatus and method of control
Assignee: Individual
•
Filing: 1941-11-27
•
Granted: 1948-03-30
•
Expires: 1961-11-27
Abstract
No abstract record available.
Inventors
- 👤 Offner Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/36014; A61N1/3603
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE239085C
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USRE15469E
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FR574433A
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US1667451A
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US1761476A
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US1820242A
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DE554559C
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US2111135A
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AT158595B
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AT157009B
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US2184511A
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US2311935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-30 | 1951-09-29 | 1952-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-30 | 1955-09-29 | 1956-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-30 | 1959-09-29 | 1960-03-30 | $7700.00 | Window Closed / Lapsed |