US2033172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of alloys containing boron
Assignee: Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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Filing: 1933-07-19
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Granted: 1936-03-10
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Expires: 1953-07-19
Abstract
No abstract record available.
Inventors
- 👤 Andrieux Jean Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:15
CPC Classifications
C; C25; C25C; C25C3/00
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) | 1939-03-10 | 1939-09-09 | 1940-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-10 | 1943-09-09 | 1944-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-10 | 1947-09-09 | 1948-03-10 | $7700.00 | Window Closed / Lapsed |