US2622209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiographic inspection device
Assignee: Crane Co
•
Filing: 1950-04-26
•
Granted: 1952-12-16
•
Expires: 1970-04-26
Abstract
No abstract record available.
Inventors
- 👤 Julius A Hjulian
- 👤 Irving H Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:34
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22531E
Cited
US1597504A
Cited
US2315819A
Cited
US2269458A
Cited
US2412174A
Cited
US2494740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |