Patent US3250271A successfully refreshed from Google Patents.
US3250271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intrauterine device
Assignee: Individual
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Filing: 1963-04-29
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Granted: 1966-05-10
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Lippes Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:26
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN INTRAUTERINE DEVICE, COMPRISING AN ELONGATED BODY ARRANGED IN SINUOUS FORM IN SUBSTANTIALLY ONE PLANE WITHIN THE IMAGINARY BOUNDARIES OF AN ISOSCELES TRAPEZOID INCLUDING A PAIR OF OPPOSITE NON-PARALLEL BOUNDARY SIDES AND A PAIR OF OPPOSITE PARALLEL BOUNDARY SIDES, SUCH SINUOUS BODY HAVING A PAIR OF NODES ON EACH OF TWO OPPOSITE SIDES THEREOF AND A TERMINAL PORTION AT EACH END, ONE OF SAID NON-PARALLE BOUNDARY SIDES BEING TANGENT TO ONE NODE PAIR AND THE OTHER OF SAID NON-PARALLEL BOUNDARY
Claim 2
Dependent Claim
80 words
AN INTRAUTERINE DEVICE, COMPRISING AN ELONGATED BODY ARRANGED IN SINUOUS FORM IN SUBSTANTIALLY ONE PLANE WITHIN THE IMAGINARY BOUNDARIES OF AN ISOSCELES TRAPEZOID INCLUDING A PAIR OF OPPOSITE NON-PARALLEL BOUNDARY SIDES AND A PAIR OF OPPOSITE PARALLEL BOUNDARY SIDES, SUCH SINUOUS BODY HAVING A PAIR OF NODES ON EACH OF TWO OPPOSITE SIDES THEREOF AND A TERMINAL PORTION AT EACH END, ONE OF SAID NON-PARALLE BOUNDARY SIDES BEING TANGENT TO ONE NODE PAIR AND THE OTHER OF SAID NON-PARALLEL BOUNDARY
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |