US2911537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray cone assembly
Assignee: F R MACHINE WORKS Inc
•
Filing: 1958-03-24
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Granted: 1959-11-03
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Expires: 1978-03-24
Abstract
No abstract record available.
Inventors
- 👤 Chester B Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:23
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2295975A
Cited
US2344736A
Cited
US2542196A
Cited
GB706378A
Cited
US2806146A
Cited
US2881329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |