US1916474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper and copper alloy tube and method of making
Assignee: American Brass Co
•
Filing: 1930-12-10
•
Granted: 1933-07-04
•
Expires: 1950-12-10
Abstract
No abstract record available.
Inventors
- 👤 Fred W French
- 👤 Leon H French
- 👤 Harry B Rathbun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:42
CPC Classifications
C; C23; C23F; C23F15/00; C22; C22F; C22F1/00; C22F1/08; C23G; C23G3/00; C23G3/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49359; Y10T29/49391; Y10T29/49808
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1936-07-03 | 1937-01-02 | 1937-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-03 | 1941-01-02 | 1941-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-03 | 1945-01-02 | 1945-07-04 | $7700.00 | Window Closed / Lapsed |