US1944243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling characteristics of a liquid
Assignee: AT&T Inc
•
Filing: 1932-05-19
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Granted: 1934-01-23
•
Expires: 1952-05-19
Abstract
No abstract record available.
Inventors
- 👤 Zoltan J Kegl
- 👤 Henry M Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:05
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/02; G01N11/04; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2504; Y10T137/2506; Y10T137/7287; Y10T137/7339; Y10T137/7355; Y10T137/7358; Y10T137/7368
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) | 1937-01-22 | 1937-07-24 | 1938-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-22 | 1941-07-24 | 1942-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-22 | 1945-07-24 | 1946-01-23 | $7700.00 | Window Closed / Lapsed |