US3373803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer element
Assignee: Slant Fin Corp
•
Filing: 1965-06-23
•
Granted: 1968-03-19
•
Expires: 1985-06-23
Abstract
No abstract record available.
Inventors
- 👤 Steinberg Richard
- 👤 Turinsky Isidore
- 👤 Jose I Vasquez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:22
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28F1/30; B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/24; Y; Y10; Y10S; Y10S165/00; Y10S165/51; Y10S165/518; Y10S165/522; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA679809A
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US1630749A
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US2012269A
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US1920357A
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US2053239A
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US2245069A
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US2307355A
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US2430631A
Cited
US2804286A
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US3011466A
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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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |