US2620798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pinless diaper
Assignee: Individual
•
Filing: 1951-12-04
•
Granted: 1952-12-09
•
Expires: 1971-12-04
Abstract
No abstract record available.
Inventors
- 👤 Luella C O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:45
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)
US2242977A
Cited
US2301277A
Cited
US2347867A
Cited
US2410374A
Cited
US2506231A
Cited
US2568590A
Cited
US2568305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |