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Patent US1915811A successfully refreshed from Google Patents.
US1915811A
Expired / Lapsed
US
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Instrument for examining tubes and cavities in the human and other bodies
Assignee: FIRM GEORG WOLF GmbH
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Filing: 1931-07-08
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Granted: 1933-06-27
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Expires: 1951-07-08
Abstract
No abstract record available.
Inventors
- 👤 Wolf Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:24
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/273; A61B1/2736; Y; Y10; Y10S; Y10S385/00; Y10S385/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-06-26 | 1936-12-26 | 1937-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-06-26 | 1940-12-26 | 1941-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-06-26 | 1944-12-26 | 1945-06-27 | $7700.00 | Window Closed / Lapsed |