US2856775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mercurial manometer
Assignee: Individual
•
Filing: 1955-12-13
•
Granted: 1958-10-21
•
Expires: 1975-12-13
Abstract
No abstract record available.
Inventors
- 👤 Allen W Niles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:37
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0091; G01L9/0092; G01F; G01F23/00; G01F23/14; G01F23/18; G01F23/22; G01F23/24; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7339; Y10T137/7349; Y10T137/7352; Y10T137/7358; Y10T137/7368
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |