US3474812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow regulators
Assignee: BOC Group Ltd
•
Filing: 1965-12-13
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Granted: 1969-10-28
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Expires: 1985-12-13
Abstract
No abstract record available.
Inventors
- 👤 David M Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:56
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; A; A61; A61M; A61M16/00; A61M16/08; A61M16/0816; A61M16/0841; A61M16/0858; A61M16/20; A61M16/201; A61M16/206; A61M16/207; A62; A62B; A62B9/00; A62B9/02; A62B9/022; A62B9/027; B; B64; B64D; B64D13/00; B64D13/02; B64D13/04; Y; Y10; Y10S; Y10S137/00; Y10S137/908; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012; Y10T137/2496; Y10T137/2514; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/87571; Y10T137/87587; Y10T137/87603; Y10T137/87643
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) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |