US2969956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe joint for heat exchange devices
Assignee: Licencia Talalmanyokat Ertekesito Vallalat
•
Filing: 1955-12-27
•
Granted: 1961-01-31
•
Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Forgo Laszlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/26; F28F9/262; F28F9/02; F28F9/04; F28F9/06; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/471; Y10S165/477
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2735698A
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US1101634A
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US1183312A
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US1574956A
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US1709837A
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GB315934A
Cited
US2260638A
Cited
CH238734A
Cited
DE805470C
Cited
US2676038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |