US3485260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid drainage
Assignee: Watts Regulator Co
•
Filing: 1967-06-14
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Granted: 1969-12-23
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Expires: 1987-06-14
Abstract
No abstract record available.
Inventors
- 👤 Howard Doerle Hendrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:33
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; B01D45/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3102; Y10T137/3105; Y10T137/8593; Y10T137/87265; Y10T137/87378
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US722837A
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US2537224A
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US2662544A
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US2692026A
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US2924237A
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US3093467A
Cited
US3261146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |