US2067830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrator
Assignee: Individual
•
Filing: 1935-12-02
•
Granted: 1937-01-12
•
Expires: 1955-12-02
Abstract
No abstract record available.
Inventors
- 👤 James A Depew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:39
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/042; F25D2317/00; F25D2317/04; F25D2317/041; F25D2317/0413; F25D2331/00; F25D2331/80; F25D2331/804; Y; Y10; Y10S; Y10S220/00; Y10S220/913; Y10S62/00; Y10S62/11; Y10T; Y10T137/00; Y10T137/5762; Y10T137/5907
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) | 1940-01-12 | 1940-07-13 | 1941-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-01-12 | 1944-07-13 | 1945-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-01-12 | 1948-07-13 | 1949-01-12 | $7700.00 | Window Closed / Lapsed |