US2647398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balance testing device
Assignee: Individual
•
Filing: 1952-04-02
•
Granted: 1953-08-04
•
Expires: 1972-04-02
Abstract
No abstract record available.
Inventors
- 👤 Marvel Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:18
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/02; G01M1/04; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T74/00; Y10T74/20; Y10T74/20006
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US431750A
Cited
US2519689A
Cited
US1389728A
Cited
US1776525A
Cited
US2349288A
Cited
US2481256A
Cited
US2512231A
Cited
US2569311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |