Patent US3510930A successfully refreshed from Google Patents.
US3510930A
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Method of fabricating a heat exchanger
Assignee: LONG MANUFACTURING Ltd A CORP OF CANADA
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Filing: 1968-06-14
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Granted: 1970-05-12
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Expires: 1988-06-14
Abstract
No abstract record available.
Inventors
- 👤 Edward P Oddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:26
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/32; F28F1/325; B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; B21D53/085; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/4938
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1951958A
Cited
US2048207A
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US2246258A
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US2428145A
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DE958564C
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US3373803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |