US2567519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure monitoring device
Assignee: Individual
•
Filing: 1948-02-27
•
Granted: 1951-09-11
•
Expires: 1968-02-27
Abstract
No abstract record available.
Inventors
- 👤 Livingston Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:23
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0033; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1631958A
Cited
US1780179A
Cited
FR715429A
Cited
US2013252A
Cited
US2062437A
Cited
US2265114A
Cited
US2388542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-10 | 1955-03-12 | 1955-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-10 | 1959-03-12 | 1959-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-10 | 1963-03-12 | 1963-09-11 | $7700.00 | Window Closed / Lapsed |