US1829756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homogeneous body consisting of rhenium
Assignee: Siemens and Halske AG
•
Filing: 1929-05-18
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Granted: 1931-11-03
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Expires: 1949-05-18
Abstract
No abstract record available.
Inventors
- 👤 Noddack Walter
- 👤 Noddack Ida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:38
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/02; H01K1/04; H01K1/08; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938
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) | 1934-11-02 | 1935-05-04 | 1935-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-11-02 | 1939-05-04 | 1939-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-11-02 | 1943-05-04 | 1943-11-03 | $7700.00 | Window Closed / Lapsed |