US2892318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow controlling valve and heat exchange system employing the same
Assignee: Kramer Trenton Co
•
Filing: 1956-03-15
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Granted: 1959-06-30
•
Expires: 1976-03-15
Abstract
No abstract record available.
Inventors
- 👤 Malkoff Hyman
- 👤 Daniel E Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:16
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022; F25B5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1224221A
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US2723537A
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US2748571A
Cited
US2763130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-29 | 1962-12-29 | 1963-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-29 | 1966-12-29 | 1967-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-29 | 1970-12-29 | 1971-06-30 | $7700.00 | Window Closed / Lapsed |