Patent US3017903A successfully refreshed from Google Patents.
US3017903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve
Assignee: Individual
•
Filing: 1960-08-17
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Granted: 1962-01-23
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Expires: 1980-08-17
Abstract
No abstract record available.
Inventors
- 👤 Steffens Eugene Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:38
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F25; F25B; F25B41/00; F25B41/30; F25B41/31; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/012
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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |