US3230953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intrauterine device
Assignee: Individual
•
Filing: 1963-01-30
•
Granted: 1966-01-25
•
Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 Charles H Birnberg
- 👤 John L Marco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/142; A61B; A61B90/00; A61B90/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AN INTRAUTERINE DEVICE MADE FROM A SUBSTANTIALLY RESILIENT FLEXIBLE PLASTIC MATERIAL COMPRISING A PAIR OF OPPOSED END LEGS, SUPPORTING BARS CONNECTING SAID END LEGS TOGETHER AND BEING INTEGRAL THEREWITH, SAID SUPPORTING BARS INTERSECTING EACH OTHER AND BEING MATERIAL WITH EACH OTHER AT THE POINT OF INTERSECTION, SAID SUPPORTING BARS CONNECTING OPPOSITE EDGES OF SAID END LEGS TOGETHER AND BEING AT AN ACUTE ANGLE TO SAID END LEGS AT THE EDGES THEREOF.
Claim 2
Dependent Claim
71 words
AN INTRAUTERINE DEVICE MADE FROM A SUBSTANTIALLY RESILIENT FLEXIBLE PLASTIC MATERIAL COMPRISING A PAIR OF OPPOSED END LEGS, SUPPORTING BARS CONNECTING SAID END LEGS TOGETHER AND BEING INTEGRAL THEREWITH, SAID SUPPORTING BARS INTERSECTING EACH OTHER AND BEING MATERIAL WITH EACH OTHER AT THE POINT OF INTERSECTION, SAID SUPPORTING BARS CONNECTING OPPOSITE EDGES OF SAID END LEGS TOGETHER AND BEING AT AN ACUTE ANGLE TO SAID END LEGS AT THE EDGES THEREOF.
References Cited (Backward Citations)
US40949A
Cited
DE426585C
Cited
US662716A
Cited
US1896071A
Cited
US2176559A
Cited
US2239584A
Cited
US2855932A
Cited
US2854717A
Cited
US3077879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |