Patent US1439352A successfully refreshed from Google Patents.
US1439352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for forming metal
Assignee: Individual
•
Filing: 1921-11-01
•
Granted: 1922-12-19
•
Expires: 1941-11-01
Abstract
No abstract record available.
Inventors
- 👤 Vincent B Ash
- 👤 Arthur E Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:01
CPC Classifications
B; B21; B21D; B21D51/00; B21D22/00; B21D22/20; B21D22/21; F; F16; F16D; F16D65/00; F16D65/02; F16D65/10; F16D2250/00; F16D2250/0023; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49481; Y10T29/49492; Y10T29/49496; Y10T29/49504; Y10T29/51; Y10T29/5185
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1925-12-18 | 1926-06-19 | 1926-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-12-18 | 1930-06-19 | 1930-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-12-18 | 1934-06-19 | 1934-12-19 | $7700.00 | Window Closed / Lapsed |