US2523876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric thawer for pipes
Assignee: ARDO Oy AB
•
Filing: 1948-02-27
•
Granted: 1950-09-26
•
Expires: 1968-02-27
Abstract
No abstract record available.
Inventors
- 👤 Orola Kaarlo Samuli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:13
CPC Classifications
E; E03; E03B; E03B7/00; E03B7/09; E03B7/14; F; F16; F16L; F16L53/00; F16L53/30; F16L53/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1316190A
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US1492821A
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US1663255A
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US1704413A
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US1972621A
Cited
US1959594A
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US1998229A
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US2426976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |