Patent US3509884A successfully refreshed from Google Patents.
US3509884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectal balloon catheter
Assignee: Individual
•
Filing: 1967-09-13
•
Granted: 1970-05-05
•
Expires: 1987-09-13
Abstract
No abstract record available.
Inventors
- 👤 William Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04; A61M25/10; A61M25/1011; A61M2210/00; A61M2210/10; A61M2210/1042; A61M2210/1067
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR582423A
Cited
US2173527A
Cited
US2210744A
Cited
US2473742A
Cited
US2499045A
Cited
US2693191A
Cited
US3154077A
Cited
US3459175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |