US2437916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for examining living tissue
Assignee: Altria Group Inc
•
Filing: 1943-12-11
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Granted: 1948-03-16
•
Expires: 1963-12-11
Abstract
No abstract record available.
Inventors
- 👤 Willard F Greenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:02
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/0059; A61B5/0093; A61B5/103; A61B5/1032; A61B5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1785392A
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DE537683C
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US2204809A
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US2225274A
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US2193606A
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US2215211A
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US2186143A
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US2334643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |