US2223037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold working metal
Assignee: Individual
•
Filing: 1939-01-10
•
Granted: 1940-11-26
•
Expires: 1959-01-10
Abstract
No abstract record available.
Inventors
- 👤 Harry K Ihrig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
CPC Classifications
B; B21; B21C; B21C9/00; B21C9/02; C; C10; C10M; C10M7/00; C10M2201/00; C10M2201/06; C10M2201/062; C10M2205/00; C10M2205/18; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/12; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; 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) | 1943-11-26 | 1944-05-27 | 1944-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-26 | 1948-05-27 | 1948-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-26 | 1952-05-27 | 1952-11-26 | $7700.00 | Window Closed / Lapsed |