US1664840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for standardizing solutions
Assignee: Belden Manufacturing Co
•
Filing: 1925-05-14
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Granted: 1928-04-03
•
Expires: 1945-05-14
Abstract
No abstract record available.
Inventors
- 👤 Hugo H Wermine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:31
CPC Classifications
G; G01; G01N; G01N9/00; G01N9/10; G01N9/12; G01N9/18; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-04-03 | 1931-10-03 | 1932-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-04-03 | 1935-10-03 | 1936-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-04-03 | 1939-10-03 | 1940-04-03 | $7700.00 | Window Closed / Lapsed |