Patent US3421539A successfully refreshed from Google Patents.
US3421539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commode valve assembly
Assignee: Individual
•
Filing: 1965-09-14
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Granted: 1969-01-14
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Expires: 1985-09-14
Abstract
No abstract record available.
Inventors
- 👤 Shirley Mclarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:29
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7381; Y10T137/7417; Y10T137/7423; Y10T137/7439; Y10T137/7465; Y10T137/7468
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2841169A
Cited
US930454A
Cited
US1114019A
Cited
US2013188A
Cited
US2809656A
Cited
US2986155A
Cited
US2976010A
Cited
US3057370A
Cited
US3115153A
Cited
US3194258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |