US2373405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making seamless hollow bodies of refractory metals
Assignee: CALLITE TUNGSTEN Corp
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Filing: 1941-02-14
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Granted: 1945-04-10
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Expires: 1961-02-14
Abstract
No abstract record available.
Inventors
- 👤 Lowit Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:32
CPC Classifications
B; B22; B22F; B22F5/00; B22F5/10; B22F5/106; B21; B21C; B21C37/00; B21C37/06; B21C37/30; B22F2998/00; Y; Y10; Y10S; Y10S29/00; Y10S29/031; Y10S29/038; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12292
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) | 1948-04-09 | 1948-10-09 | 1949-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-09 | 1952-10-09 | 1953-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-09 | 1956-10-09 | 1957-04-10 | $7700.00 | Window Closed / Lapsed |