Patent US2500432A successfully refreshed from Google Patents.
US2500432A
Expired / Lapsed
US
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Pinless diaper
Assignee: Individual
•
Filing: 1947-01-10
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Granted: 1950-03-14
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Expires: 1967-01-10
Abstract
No abstract record available.
Inventors
- 👤 Ravkind Lou
- 👤 Aaron W Klausner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:29
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/49003; A61F13/49004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1705562A
Cited
US1931357A
Cited
US1886617A
Cited
USRE21092E
Cited
GB493819A
Cited
US2366002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |