US3523576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger apparatus
Assignee: Monsanto Co
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Filing: 1968-10-29
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Granted: 1970-08-11
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Expires: 1988-10-29
Abstract
No abstract record available.
Inventors
- 👤 Cecil C Gibson Jr
- 👤 Jimmy O Love
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:13
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/32; B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/80; B29C48/83; B29C48/832; D01D1/00; D01D1/06; F; F28; F28F; F28F13/00; F28F13/06; B29C48/03; B29C48/05
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) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |