US2125663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Classifier
Assignee: WUENSCH HETERO CONCENTRATION P
•
Filing: 1935-11-23
•
Granted: 1938-08-02
•
Expires: 1955-11-23
Abstract
No abstract record available.
Inventors
- 👤 Wuensch Charles Erb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:23
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/62; B03B5/623; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2504; Y10T137/2514
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) | 1941-08-01 | 1942-01-31 | 1942-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-08-01 | 1946-01-31 | 1946-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-08-01 | 1950-01-31 | 1950-08-02 | $7700.00 | Window Closed / Lapsed |