US2445574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die set
Assignee: Individual
•
Filing: 1945-04-05
•
Granted: 1948-07-20
•
Expires: 1965-04-05
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Grunow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:33
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/10; F; F16; F16B; F16B9/00; F16B9/05; F16B9/054; F16B9/056; F16B2200/00; F16B2200/20; F16B2200/205; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |