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US2539701A
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Pressure resistant cellular radiator core
Assignee: Individual
•
Filing: 1947-04-04
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Granted: 1951-01-30
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Expires: 1967-04-04
Abstract
No abstract record available.
Inventors
- 👤 Przyborowski Stanislaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:39
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/03; F28D1/0358; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/373; Y10S165/374; Y10S165/379
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191008906A
Cited
FR426604A
Cited
US1730719A
Cited
US1743785A
Cited
US1905447A
Cited
US2073588A
Cited
US2164005A
Cited
GB568296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |