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US3507283A
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Cryosurgical instrument
Assignee: Northwestern University
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Filing: 1967-10-11
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Granted: 1970-04-21
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Expires: 1987-10-11
Abstract
No abstract record available.
Inventors
- 👤 Edward R Thomas Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:00
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/02; A61B18/04; A61B18/08; A61B2018/00005; A61B2018/00041; A61B2018/00571; A61B2018/00595
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3289424A
Cited
US3298371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |