Patent US2425293A successfully refreshed from Google Patents.
US2425293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method anx
Assignee: —
•
Filing: —
•
Granted: 1947-08-12
•
Expires: 1964-08-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:16
CPC Classifications
D; D04; D04B; D04B9/00; D04B9/42; D04B9/44; D04B1/00; D04B1/14; D10; D10B; D10B2403/00; D10B2403/02; D10B2403/024; D10B2403/0243; D10B2403/03; D10B2403/031; D10B2403/0312
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US281804A
Cited
US325490A
Cited
US1408586A
Cited
GB195802A
Cited
US2126250A
Cited
US2175401A
Cited
US2292231A
Cited
US2334399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |