Patent US950869A successfully refreshed from Google Patents.
US950869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing an amorphous tungsten powder.
Assignee: Individual
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Filing: 1909-03-23
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Granted: 1910-03-01
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Expires: 1929-03-23
Abstract
No abstract record available.
Inventors
- 👤 Johannes Schilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:12
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F9/22; C; C22; C22B; C22B5/00; C22B5/02; C22B5/04
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) | 1913-02-28 | 1913-08-30 | 1914-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-02-28 | 1917-08-30 | 1918-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-02-28 | 1921-08-30 | 1922-03-01 | $7700.00 | Window Closed / Lapsed |