US2470583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve control system
Assignee: American Steel Foundries
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Filing: 1944-05-22
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Granted: 1949-05-17
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Expires: 1964-05-22
Abstract
No abstract record available.
Inventors
- 👤 Robert K Sedgwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:32
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/16; B30B15/161; F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20546; F15B2211/255; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/415; F15B2211/41554; F15B2211/42; F15B2211/421; F15B2211/45; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518; F15B2211/515; F15B2211/5151; F15B2211/70; F15B2211/75
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) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |