Patent US2258930A successfully refreshed from Google Patents.
US2258930A
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US
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Metal drawing process
Assignee: Individual
•
Filing: 1939-01-21
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Granted: 1941-10-14
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Expires: 1959-01-21
Abstract
No abstract record available.
Inventors
- 👤 Haefner Rudolf
- 👤 Schunck Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:43
CPC Classifications
C; C10; C10M; C10M7/00; C10M2203/00; C10M2203/10; C10M2207/00; C10M2207/40; C10M2207/404; C10M2219/00; C10M2219/02; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/08; C10N2050/10
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) | 1944-10-13 | 1945-04-14 | 1945-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-10-13 | 1949-04-14 | 1949-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-10-13 | 1953-04-14 | 1953-10-14 | $7700.00 | Window Closed / Lapsed |