US2938120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray filter grid assembly and actuating means therefor
Assignee: Individual
•
Filing: 1957-12-02
•
Granted: 1960-05-24
•
Expires: 1977-12-02
Abstract
No abstract record available.
Inventors
- 👤 Leslie M Forsyth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:08
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |