Patent US2647236A successfully refreshed from Google Patents.
Patent US2424879A successfully refreshed from Google Patents.
US2424879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air tank
Assignee: Individual
•
Filing: 1944-08-05
•
Granted: 1947-07-29
•
Expires: 1964-08-05
Abstract
No abstract record available.
Inventors
- 👤 Dach Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:15
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/002; F17C1/00; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0147; F17C2201/0166; F17C2201/0171; F17C2201/03; F17C2201/035; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0614; F17C2203/0617; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0341; F17C2205/0352; F17C2205/0388; F17C2205/0394; F17C2205/0397; F17C2209/00; F17C2209/22; F17C2209/221; F17C2221/00; F17C2221/03; F17C2221/031; F17C2223/00; F17C2223/01; F17C2223/0107; F17C2223/0123; F17C2223/03; F17C2223/035; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0157; F17C2265/00; F17C2265/01; F17C2265/012; F17C2265/015; F17C2265/017; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3102
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US570790A
Cited
US1452447A
Cited
GB190504330A
Cited
US835244A
Cited
US1925373A
Cited
US2223652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |