Patent US2197616A successfully refreshed from Google Patents.
US2197616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-space insulated conductor
Assignee: Siemens and Halske AG
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Filing: 1938-03-18
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Granted: 1940-04-16
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Expires: 1958-03-18
Abstract
No abstract record available.
Inventors
- 👤 Lehne Theodor
- 👤 Schluckebier Konrad
- 👤 Thomas Paul
- 👤 Wassmansdorff Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:43
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1834; H01B11/1847
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) | 1943-04-16 | 1943-10-16 | 1944-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-16 | 1947-10-16 | 1948-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-16 | 1951-10-16 | 1952-04-16 | $7700.00 | Window Closed / Lapsed |