Patent US2716802A successfully refreshed from Google Patents.
US2716802A
Expired / Lapsed
US
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Method of making heat exchange devices
Assignee: Tranter Manufacturing Inc
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Filing: 1952-10-20
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Granted: 1955-09-06
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Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Carl S Greer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:44
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US894711A
Cited
US1776080A
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US1797030A
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US2462511A
Cited
US2427336A
Cited
US2571505A
Cited
US2672324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |