Patent US3116541A successfully refreshed from Google Patents.
US3116541A
Expired / Lapsed
US
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Method of making a heat exchanger
Assignee: Ford Motor Co
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Filing: 1957-05-20
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Granted: 1964-01-07
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Expires: 1977-05-20
Abstract
No abstract record available.
Inventors
- 👤 Henry A Nickol
- 👤 White Theodore Zone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:44
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0234; B; B21; B21D; B21D53/00; B21D53/02; F28F13/00; F28F13/06; F28F13/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1690501A
Cited
US1781840A
Cited
US2054403A
Cited
US2222721A
Cited
US2235967A
Cited
US2505790A
Cited
US2796239A
Cited
US2782008A
Cited
US2752128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |