Patent US3077879A successfully refreshed from Google Patents.
US3077879A
Expired / Lapsed
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Contraceptive intra-uterine appliance
Assignee: Individual
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Filing: 1961-02-24
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Granted: 1963-02-19
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Expires: 1981-02-24
Abstract
No abstract record available.
Inventors
- 👤 Knoch Max Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:23
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A CONTRACEPTIVE INTRA-UTERINE APPLIANCE COMPRISING TWO CIRCULAR RINGS OF EQUAL RADIUS ELASTICALLY CONNECTED BY A CONNECTING PART, SAID TWO RINGS BEING POSITIONED ON THE SAME SIDE OF SAID CONNECTING PART AND IN ESSENCE NOT OVERLYING, AND A THIRD CIRCULAR RING TANGENTIALLY CONNECTED TO SAID CONNECTING PART WITH ITS CENTER PERPENDICULAR TO THE MIDPOINT OF A LINE CONNECTING THE CENTERS OF SAID TWO CIRCULAR RINGS AND ON THE OPPOSITE SIDE OF SAID CONNECTING PART FROM SAID TWO CIRCULAR RINGS, ALL OF SAID CIRCULAR RINGS BEING POSITIONED IN THE SAME PLANE, WHEREBY SAID RINGS TOGETHER WITH SAID ELASTICALLY CONNECTING PART ARE ADAPTED TO CORRECT TO DEVIATIONS IN SHAPE AND DIMENSION OF THE UTERINE CAVITY AND TO MAINTAIN CONTACT WITH THE OVIDUCTS.
Claim 2
Dependent Claim
119 words
A CONTRACEPTIVE INTRA-UTERINE APPLIANCE COMPRISING TWO CIRCULAR RINGS OF EQUAL RADIUS ELASTICALLY CONNECTED BY A CONNECTING PART, SAID TWO RINGS BEING POSITIONED ON THE SAME SIDE OF SAID CONNECTING PART AND IN ESSENCE NOT OVERLYING, AND A THIRD CIRCULAR RING TANGENTIALLY CONNECTED TO SAID CONNECTING PART WITH ITS CENTER PERPENDICULAR TO THE MIDPOINT OF A LINE CONNECTING THE CENTERS OF SAID TWO CIRCULAR RINGS AND ON THE OPPOSITE SIDE OF SAID CONNECTING PART FROM SAID TWO CIRCULAR RINGS, ALL OF SAID CIRCULAR RINGS BEING POSITIONED IN THE SAME PLANE, WHEREBY SAID RINGS TOGETHER WITH SAID ELASTICALLY CONNECTING PART ARE ADAPTED TO CORRECT TO DEVIATIONS IN SHAPE AND DIMENSION OF THE UTERINE CAVITY AND TO MAINTAIN CONTACT WITH THE OVIDUCTS.
References Cited (Backward Citations)
GB461348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |