US2859619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow meters
Assignee: HM Hobson Ltd
•
Filing: 1956-02-21
•
Granted: 1958-11-11
•
Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 Fellows Horace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:22
CPC Classifications
G; G06; G06J; G06J1/00; G01; G01F; G01F1/00; G01F1/76; G01F1/86; G01F1/90; H; H03; H03K; H03K21/00; H03K21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2158285A
Cited
US2385725A
Cited
US2609686A
Cited
US2741917A
Cited
US2683224A
Cited
US2767582A
Cited
FR1109332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |