Patent US3398744A successfully refreshed from Google Patents.
US3398744A
Expired / Lapsed
US
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Colostomy appliance
Assignee: WALDEMAR A WALLBERG
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Filing: 1965-06-17
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Granted: 1968-08-27
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Expires: 1985-06-17
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Hooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:03
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/44; A61F5/445; A61F2005/4483
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2489016A
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US2549649A
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US2692597A
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US2656838A
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US2874697A
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US2869548A
Cited
US3089493A
Cited
US3076458A
Cited
US3283757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |