US2701130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Element set for heat exchangers
Assignee: JARVIS C MARBLE
•
Filing: 1950-12-27
•
Granted: 1955-02-01
•
Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 Boestad Gustav Karl William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:56
CPC Classifications
F; F28; F28D; F28D17/00; F28D17/02; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US949668A
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US902812A
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US1803746A
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US2023965A
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US2049246A
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US2313081A
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US2157744A
Cited
US2405593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |