US2607519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer member
Assignee: Dole Valve Co
•
Filing: 1946-11-22
•
Granted: 1952-08-19
•
Expires: 1966-11-22
Abstract
No abstract record available.
Inventors
- 👤 Frank E Sanborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:48
CPC Classifications
F; F25; F25D; F25D31/00; F25D31/002; B; B67; B67D; B67D3/00; B67D3/0009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US948252A
Cited
US1077368A
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US1662267A
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US1776307A
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US1847573A
Cited
US2121841A
Cited
US2241426A
Cited
US2349441A
Cited
US2420708A
Cited
US2466676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |