US2932882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing powdered refractory metals for mechanical working
Assignee: Individual
•
Filing: 1954-02-25
•
Granted: 1960-04-19
•
Expires: 1974-02-25
Abstract
No abstract record available.
Inventors
- 👤 Jr John C R Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:15
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/06; B22F7/08; B22F3/00; B22F3/12; B22F3/1208; B22F3/1216; B22F3/1241; Y; Y10; Y10S; Y10S29/00; Y10S29/031; Y10S29/045; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US460921A
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US1081125A
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US2276004A
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US2375154A
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US2478037A
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US2653494A
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US2648125A
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US2633523A
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US2744314A
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US2615411A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |