US2777674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate type heat exchanger
Assignee: Creamery Package Manufacturing Co
•
Filing: 1953-05-29
•
Granted: 1957-01-15
•
Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Alden H Wakeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:14
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/08; F28F3/083; F28F3/02; F28F3/04; F28F3/042; F28F3/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1747115A
Cited
US2248933A
Cited
US2610834A
Cited
US2550339A
Cited
US2676000A
Cited
US2594008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |