Patent US3123835A successfully refreshed from Google Patents.
US3123835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shernov
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:00
CPC Classifications
A; A47; A47K; A47K1/00; A47K1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A COMBINATION SINK STOPPER AND WATER CIRCULATOR COMPRISED OF A FLAT MEMBER OF RESILIENT MATERIAL HAVING TOP AND BOTTOM SURFACES, SAID MEMBER HAVING A CENTRAL OPENING THEREIN DEFINED BY A BEVELED CUT WITH THE BOTTOM OF GREATER EXTENT THAN THE TOP, SAID CUT DEFINING AN INTEGRAL FLAP SECURED TO SAID DISK AT ONE SIDE OF THE CUT, SAID FLAP COMPRISING A ONE-WAY VALVE WHICH IS CLOSED WHEN THE TOP OF SAID MEMBER IS UP, AND A PROTUBERANCE ON THE TOP OF SAID FLAP WHICH, WHEN THE MEMBER IS REVERSED, RAISES SAID FLAP TO DEFINE A DRAINAGE OPENING ABOUT THE PERIPHERY OF SAID ANNULAR CUT.
Claim 2
Dependent Claim
104 words
A COMBINATION SINK STOPPER AND WATER CIRCULATOR COMPRISED OF A FLAT MEMBER OF RESILIENT MATERIAL HAVING TOP AND BOTTOM SURFACES, SAID MEMBER HAVING A CENTRAL OPENING THEREIN DEFINED BY A BEVELED CUT WITH THE BOTTOM OF GREATER EXTENT THAN THE TOP, SAID CUT DEFINING AN INTEGRAL FLAP SECURED TO SAID DISK AT ONE SIDE OF THE CUT, SAID FLAP COMPRISING A ONE-WAY VALVE WHICH IS CLOSED WHEN THE TOP OF SAID MEMBER IS UP, AND A PROTUBERANCE ON THE TOP OF SAID FLAP WHICH, WHEN THE MEMBER IS REVERSED, RAISES SAID FLAP TO DEFINE A DRAINAGE OPENING ABOUT THE PERIPHERY OF SAID ANNULAR CUT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |