US2470970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus for use in obstetrics
Assignee: Individual
•
Filing: 1945-08-10
•
Granted: 1949-05-24
•
Expires: 1965-08-10
Abstract
No abstract record available.
Inventors
- 👤 Benoit Frederic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US666956A
Cited
US1720662A
Cited
DE487385C
Cited
DE583414C
Cited
US2028338A
Cited
US2073701A
Cited
US2071860A
Cited
US1994907A
Cited
US2046712A
Cited
US2065295A
Cited
US2201966A
Cited
US2363305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |