US2840826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stool sampling apparatus
Assignee: Individual
•
Filing: 1955-01-24
•
Granted: 1958-07-01
•
Expires: 1975-01-24
Abstract
No abstract record available.
Inventors
- 👤 Gerald K Ebbesen
- 👤 Harry J Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:44
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/0038
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US366075A
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US1797539A
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US1949246A
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GB408607A
Cited
US1963233A
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US2130728A
Cited
US2093985A
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US2522708A
Cited
US2742903A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |