US2523213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure operated device
Assignee: Johnson Service Co
•
Filing: 1947-02-24
•
Granted: 1950-09-19
•
Expires: 1967-02-24
Abstract
No abstract record available.
Inventors
- 👤 Adolph J Hilgert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:55
CPC Classifications
G; G05; G05G; G05G23/00; G01; G01L; G01L7/00; G01L7/02; G01L7/10; G01L7/108; G05G2700/00; G05G2700/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/18992
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1116268A
Cited
CH69523A
Cited
US1644783A
Cited
US2170744A
Cited
US2159513A
Cited
US2169524A
Cited
US2344858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |