US2541805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rate of change and maximum limit device for pressure fluid servomotor regulating systems
Assignee: General Electric Co
•
Filing: 1950-02-09
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Granted: 1951-02-13
•
Expires: 1970-02-09
Abstract
No abstract record available.
Inventors
- 👤 Donald C Berkey
- 👤 Neal E Starkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/16; F02C9/26; F02C9/28; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |