US1180614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly-refractory article of tantalum and its alloys.
Assignee: Siemens and Halske AG
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Filing: 1912-10-17
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Granted: 1916-04-25
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Expires: 1932-10-17
Abstract
No abstract record available.
Inventors
- 👤 Otto Archibald Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:01
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12819; Y10T428/12861; Y10T428/12875
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) | 1919-04-25 | 1919-10-25 | 1920-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-04-25 | 1923-10-25 | 1924-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-04-25 | 1927-10-25 | 1928-04-25 | $7700.00 | Window Closed / Lapsed |