Patent US2749558A successfully refreshed from Google Patents.
US2749558A
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Defecation relief unit for aeroplane personnel and sick-bed
Assignee: Individual
•
Filing: 1951-12-11
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Granted: 1956-06-12
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Expires: 1971-12-11
Abstract
No abstract record available.
Inventors
- 👤 Lent Constantin Paul
- 👤 Kerns Homer
- 👤 Mehler Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:18
CPC Classifications
B; B64; B64D; B64D11/00; B64D11/02; A; A61; A61F; A61F5/00; A61F5/44; A61F5/451; A61G; A61G9/00; A61G2220/00; A61G2220/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US719811A
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US807750A
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US815481A
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FR378760A
Cited
US940958A
Cited
US1130441A
Cited
US1362751A
Cited
US1818586A
Cited
US2300109A
Cited
US2573414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |