US2570820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray cone assembly
Assignee: Philips Laboratories Inc
•
Filing: 1950-05-29
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Granted: 1951-10-09
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Expires: 1970-05-29
Abstract
No abstract record available.
Inventors
- 👤 Knab Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:37
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR461387A
Cited
US1250730A
Cited
FR532528A
Cited
FR25897E
Cited
US1813383A
Cited
US2204465A
Cited
US2331586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |