US2834582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate heat exchanger
Assignee: Individual
•
Filing: 1954-06-11
•
Granted: 1958-05-13
•
Expires: 1974-06-11
Abstract
No abstract record available.
Inventors
- 👤 Kablitz Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:42
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; Y; Y10; Y10S; Y10S165/00; Y10S165/051
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1170625A
Cited
US1662870A
Cited
US1888545A
Cited
US2663170A
Cited
US2659392A
Cited
US2566928A
Cited
US2632633A
Cited
US2752125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |