US3010215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-solids heat exchanger
Assignee: Fuller Co
•
Filing: 1959-06-29
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Granted: 1961-11-28
•
Expires: 1979-06-29
Abstract
No abstract record available.
Inventors
- 👤 Kayatz Karl-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:49
CPC Classifications
F; F27; F27B; F27B21/00; F27B21/06; C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B1/20; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16
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) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |