US2537729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure gauge
Assignee: Cooper Industries LLC
•
Filing: 1945-02-09
•
Granted: 1951-01-09
•
Expires: 1965-02-09
Abstract
No abstract record available.
Inventors
- 👤 Allen Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:12
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/06; G01L7/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US15624A
Cited
US16428A
Cited
US1406616A
Cited
US1391077A
Cited
US1761130A
Cited
US1859089A
Cited
US2297679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |