Patent US2988335A successfully refreshed from Google Patents.
US2988335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchangers
Assignee: Motors Liquidation Co
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Filing: 1958-03-06
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Granted: 1961-06-13
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Expires: 1978-03-06
Abstract
No abstract record available.
Inventors
- 👤 Frank A Disinger
- 👤 Vincenzo A Nicolia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:40
CPC Classifications
F; F28; F28F; F28F9/00; F28D; F28D7/00; F28D7/16; F28D7/1684; F28F1/00; F28F1/02; Y; Y10; Y10S; Y10S165/00; Y10S165/051; Y10S165/052; Y10S165/06; Y10S165/061
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) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |