US1428174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die structure
Assignee: Individual
•
Filing: 1920-04-22
•
Granted: 1922-09-05
•
Expires: 1940-04-22
Abstract
No abstract record available.
Inventors
- 👤 John A Luther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:11
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/26; B21D53/00; B21D53/16; B21D53/18; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2122; Y10T83/2124; Y10T83/2127; Y10T83/2135; Y10T83/2163; Y10T83/2166; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831; Y10T83/8832
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) | 1925-09-04 | 1926-03-06 | 1926-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-09-04 | 1930-03-06 | 1930-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-09-04 | 1934-03-06 | 1934-09-05 | $7700.00 | Window Closed / Lapsed |