US3407840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the level of a liquid
Assignee: GERLACH INDUSTRIES Inc A CORP OF
•
Filing: 1965-11-29
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Granted: 1968-10-29
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Expires: 1985-11-29
Abstract
No abstract record available.
Inventors
- 👤 Finnegan Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:56
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/12; G01; G01F; G01F23/00; G01F23/22; G01F23/24; G01F23/246; G01F23/247; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7306
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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |