US1840445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titration method and tablet therefor
Assignee: Electric Smelting & Aluminum C
•
Filing: 1929-10-22
•
Granted: 1932-01-12
•
Expires: 1949-10-22
Abstract
No abstract record available.
Inventors
- 👤 Fay H Guernsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:47
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/16; Y; Y10; Y10T; Y10T436/00; Y10T436/10; Y10T436/109163; Y10T436/19; Y10T436/193333
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) | 1935-01-11 | 1935-07-13 | 1936-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-01-11 | 1939-07-13 | 1940-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-01-11 | 1943-07-13 | 1944-01-12 | $7700.00 | Window Closed / Lapsed |