Patent US2422377A successfully refreshed from Google Patents.
US2422377A
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Pessary
Assignee: Diaphragm & Chemical Co
•
Filing: 1944-11-17
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Granted: 1947-06-17
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Expires: 1964-11-17
Abstract
No abstract record available.
Inventors
- 👤 Carl C Waterbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:22
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/146; Y; Y10; Y10S; Y10S220/00; Y10S220/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE471487C
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US1564310A
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DE589399C
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US1982001A
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US2041424A
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US2161080A
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US2230151A
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US2232258A
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US2398518A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |