US2680190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electrically heating and keeping at a predetermined temperature liquid substances
Assignee: Individual
•
Filing: 1949-06-10
•
Granted: 1954-06-01
•
Expires: 1969-06-10
Abstract
No abstract record available.
Inventors
- 👤 Schmidt Gerrit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:00
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/24; A47J36/2411; A47J36/2433
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1033799A
Cited
US1978089A
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US2046125A
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US2233485A
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US2194820A
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US2258210A
Cited
US2269689A
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GB601041A
Cited
US2546983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |