US2264897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for sheet metal construction
Assignee: Individual
•
Filing: 1939-03-31
•
Granted: 1941-12-02
•
Expires: 1959-03-31
Abstract
No abstract record available.
Inventors
- 👤 Becker Emil
- 👤 Becker John Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:23
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/03; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49938
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) | 1944-12-01 | 1945-06-02 | 1945-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-01 | 1949-06-02 | 1949-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-01 | 1953-06-02 | 1953-12-02 | $7700.00 | Window Closed / Lapsed |