US3245460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of removing scale in multiple unit evaporator systems
Assignee: Aqua Chem Inc
•
Filing: 1962-05-02
•
Granted: 1966-04-12
•
Expires: 1982-05-02
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Loebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:35
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; B; B01; B01D; B01D1/00; B01D1/26; Y; Y10; Y10S; Y10S159/00; Y10S159/13
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |