US2593906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Force measuring device of the diaphragm type provided with a valve for automatically applying a balancing pressure to the diaphragm
Assignee: Hagan Corp
•
Filing: 1947-06-10
•
Granted: 1952-04-22
•
Expires: 1967-06-10
Abstract
No abstract record available.
Inventors
- 👤 Alfred A Markson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:30
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2278
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1680750A
Cited
US1711066A
Cited
US2013810A
Cited
US2016824A
Cited
US2073838A
Cited
US2248322A
Cited
GB562645A
Cited
US2493012A
Cited
US2431200A
Cited
US2446385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |