US2212832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four pole device with nonlinear resistors
Assignee: Siemens and Halske AG
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Filing: 1937-08-05
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Granted: 1940-08-27
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Expires: 1957-08-05
Abstract
No abstract record available.
Inventors
- 👤 Holzler Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:15
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/02; H03K; H03K17/00; H03K17/51; H03K17/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-08-27 | 1944-02-26 | 1944-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-08-27 | 1948-02-26 | 1948-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-08-27 | 1952-02-26 | 1952-08-27 | $7700.00 | Window Closed / Lapsed |