US2260135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venting device for seals in liquidmeasuring systems
Assignee: Bristol Co
•
Filing: 1939-06-01
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Granted: 1941-10-21
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Expires: 1959-06-01
Abstract
No abstract record available.
Inventors
- 👤 John W Beecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:49
CPC Classifications
G; G01; G01F; G01F3/00; G01F3/02; G01F3/20; G01L; G01L19/00; G01L19/0007; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/8593; Y10T137/86292; Y10T137/86324; Y10T137/86348
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) | 1944-10-20 | 1945-04-21 | 1945-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-10-20 | 1949-04-21 | 1949-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-10-20 | 1953-04-21 | 1953-10-21 | $7700.00 | Window Closed / Lapsed |