US3497175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid regulator and closure valve
Assignee: BETTY K KOLAND
•
Filing: 1967-09-11
•
Granted: 1970-02-24
•
Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Betty K Koland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:58
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/567; A; A61; A61M; A61M39/00; A61M39/22; A61M39/28; A61M39/284; A61M39/286; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1337247A
Cited
US1580649A
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US2092401A
Cited
US2595511A
Cited
US2825333A
Cited
US3301296A
Cited
US3299904A
Cited
US3332439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |