US1442051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radium needle
Assignee: Individual
•
Filing: 1921-05-10
•
Granted: 1923-01-16
•
Expires: 1941-05-10
Abstract
No abstract record available.
Inventors
- 👤 William L Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:14
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1027; A61M; A61M5/00; A61N5/1007; A61N2005/1011
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) | 1926-01-15 | 1926-07-17 | 1927-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-01-15 | 1930-07-17 | 1931-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-01-15 | 1934-07-17 | 1935-01-16 | $7700.00 | Window Closed / Lapsed |