US2616671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate heat exchanger
Assignee: Creamery Package Manufacturing Co
•
Filing: 1949-02-16
•
Granted: 1952-11-04
•
Expires: 1969-02-16
Abstract
No abstract record available.
Inventors
- 👤 Alden H Wakeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:49
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/08; F28F3/083; F28F13/00; F28F13/06; F28F13/12; F28F9/00; F28F9/02; F28F9/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE505698C
Cited
US1313730A
Cited
US1458128A
Cited
USRE20139E
Cited
US2314966A
Cited
US2221937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |