US2660342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burette with variable capacity
Assignee: Individual
•
Filing: 1949-04-01
•
Granted: 1953-11-24
•
Expires: 1969-04-01
Abstract
No abstract record available.
Inventors
- 👤 Ruf Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:23
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/06; A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/31533; A61M5/31545; A61M5/31548; A61M5/3155; A61M5/31551; A61M5/31565; A61M5/3159; A61M5/31591; B01L3/00; B01L3/02; B01L3/021; B01L3/0217; B01L3/0275; B01L9/54; B01L9/543; A61M5/31561; A61M5/31563; A61M5/31566; A61M5/31573; A61M5/31575; A61M5/31576; A61M5/31578; A61M5/3158; A61M5/31583; A61M5/31586; B01L2200/00; B01L2200/04; B01L2300/00; B01L2300/08; B01L2300/0832; B01L2300/0838
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US589386A
Cited
US1433075A
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CH210119A
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US2250467A
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US2244952A
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US2354649A
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US2412295A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |