US2826702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cerebral angiographic cassette changer
Assignee: Indiana University Foundation Inc
•
Filing: 1952-10-01
•
Granted: 1958-03-11
•
Expires: 1972-10-01
Abstract
No abstract record available.
Inventors
- 👤 John A Campbell
- 👤 Patrick O Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:27
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/50; A61B6/501; A61B6/48; A61B6/481; A61B6/504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US965195A
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US1620992A
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US1576781A
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US1747434A
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US2115096A
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US2478597A
Cited
US2568191A
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US2579186A
Cited
US2617943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |