US2698622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase sensitive control for shortwave therapy devices
Assignee: Hartford National Bank and Trust Co
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Filing: 1951-12-11
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Granted: 1955-01-04
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Expires: 1971-12-11
Abstract
No abstract record available.
Inventors
- 👤 Martens Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:33
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/46; H05B6/48; H05B6/50; A; A61; A61N; A61N1/00; A61N1/40; H03; H03L; H03L5/00; H03L5/02
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) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |