US2772077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube enveloping plate condenser having rolled ends, and method of its construction
Assignee: Sundstrand Heat Transfer Inc
•
Filing: 1951-03-15
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Granted: 1956-11-27
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Expires: 1971-03-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Polad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:21
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/04; B; B21; B21D; B21D53/00; B21D53/02; B21D53/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49359; Y10T29/49396
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |