US2457744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument useful in the analysis of vibrations in organized living tissue
Assignee: Burdick Corp
•
Filing: 1942-07-14
•
Granted: 1948-12-28
•
Expires: 1962-07-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:41
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2294015A
Cited
US834998A
Cited
US1870975A
Cited
US2078792A
Cited
GB441057A
Cited
US2098695A
Cited
US2193945A
Cited
US2262936A
Cited
US2227135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |