US2415832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation absorber
Assignee: AT&T Inc
•
Filing: 1942-12-31
•
Granted: 1947-02-18
•
Expires: 1962-12-31
Abstract
No abstract record available.
Inventors
- 👤 Warren P Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:03
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/002; Y; Y10; Y10S; Y10S106/00; Y10S106/07; Y10S181/00; Y10S181/40; Y10S181/402
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2248870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |