US3461907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level control device for refrigeration systems
Assignee: CHARLES P WOOD JR
•
Filing: 1966-08-18
•
Granted: 1969-08-19
•
Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Charles P Wood Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:51
CPC Classifications
F; F25; F25B; F25B41/00; F25B2400/00; F25B2400/16; F25B2400/23; F25B2700/00; F25B2700/21; F25B2700/2108; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2240952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |