US1902200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for impregnating drinking water with radium emanation
Assignee: STANDARD RADIUM CORP OF AMERIC
•
Filing: 1926-12-02
•
Granted: 1933-03-21
•
Expires: 1946-12-02
Abstract
No abstract record available.
Inventors
- 👤 Tyrer Alfred Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:22
CPC Classifications
A; A61; A61K; A61K51/00; A61K51/12; A61K51/1282; A61K51/1289; A61K2121/00; Y; Y10; Y10S; Y10S422/00; Y10S422/903
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) | 1936-03-20 | 1936-09-19 | 1937-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-03-20 | 1940-09-19 | 1941-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-03-20 | 1944-09-19 | 1945-03-21 | $7700.00 | Window Closed / Lapsed |