US3456719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer line heat exchanger
Assignee: Lummus Technology LLC
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Filing: 1967-10-03
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Granted: 1969-07-22
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Expires: 1987-10-03
Abstract
No abstract record available.
Inventors
- 👤 Edward H Palchik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:30
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/10; F28D7/12; F28D7/0066; F28D21/00; F28D2021/0019; F28D2021/0075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |