US3417615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level indicator
Assignee: Illinois Tool Works Inc
•
Filing: 1967-04-26
•
Granted: 1968-12-24
•
Expires: 1987-04-26
Abstract
No abstract record available.
Inventors
- 👤 Francis E Ryder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:01
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/28; G01F23/284; G01F23/292; G01F23/2921; G01F23/2922; G01F23/2924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA490441A
Cited
US1724716A
Cited
US1883971A
Cited
GB412803A
Cited
US2615337A
Cited
GB672539A
Cited
US2767754A
Cited
US3273267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |