US2844736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collimator for high energy X-ray beam
Assignee: Picker X Ray Corp
•
Filing: 1954-05-18
•
Granted: 1958-07-22
•
Expires: 1974-05-18
Abstract
No abstract record available.
Inventors
- 👤 Harold E Johns
- 👤 John A Mackay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:46
CPC Classifications
G; G21; G21F; G21F5/00; G21F5/02; G21F5/04; G21K; G21K1/00; G21K1/02; G21K1/04
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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |