US2229441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonator
Assignee: Automatic Canteen Co
•
Filing: 1938-05-31
•
Granted: 1941-01-21
•
Expires: 1958-05-31
Abstract
No abstract record available.
Inventors
- 👤 John W Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:49
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2322; B01F23/236; B01F23/2362; B01F23/237; B01F23/2376; B01F23/23762; B01F25/00; B01F25/40; B01F25/45; B01F25/452; B01F25/4523; B01F2025/91; B01F2025/919; B01F2025/9191; B01F2025/91911; Y; Y10; Y10S; Y10S261/00; Y10S261/07
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) | 1944-01-21 | 1944-07-22 | 1945-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-01-21 | 1948-07-22 | 1949-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-01-21 | 1952-07-22 | 1953-01-21 | $7700.00 | Window Closed / Lapsed |