US3214197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-conveying assemblies, particularly for fluid heaters
Assignee: Heinrich Koppers GmbH
•
Filing: 1963-06-14
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Granted: 1965-10-26
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Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Gruber Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:17
CPC Classifications
C; C21; C21B; C21B9/00; F; F22; F22G; F22G3/00; F22G3/009; F28; F28D; F28D17/00; G; G21; G21C; G21C15/00; G21C15/22; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0441; Y10T137/0447
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |