Patent US2976907A successfully refreshed from Google Patents.
US2976907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal forming device and method
Assignee: General Dynamics Corp
•
Filing: 1958-08-28
•
Granted: 1961-03-28
•
Expires: 1978-08-28
Abstract
No abstract record available.
Inventors
- 👤 George W Harvey
- 👤 David F Brower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:17
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/14; Y; Y10; Y10S; Y10S264/00; Y10S264/58; Y10S425/00; Y10S425/026; Y10S425/033; Y10T; Y10T29/00; Y10T29/49; Y10T29/49803; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/49908; Y10T29/49925; Y10T29/49927
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1365198A
Cited
US2367206A
Cited
US2372516A
Cited
US2397717A
Cited
US2441517A
Cited
US2686865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |