Patent US2404020A successfully refreshed from Google Patents.
US2404020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-applying aviator's suit with helmet
Assignee: Individual
•
Filing: 1943-03-10
•
Granted: 1946-07-16
•
Expires: 1963-03-10
Abstract
No abstract record available.
Inventors
- 👤 John D Akerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:55
CPC Classifications
B; B64; B64D; B64D10/00; A; A62; A62B; A62B17/00; F; F16; F16K; F16K15/00; F16K15/02; F16K15/021; F16K15/06; F16K15/063; B64D2010/005; F16K2200/00; F16K2200/30; F16K2200/305; F16K2200/3053; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7906; Y10T137/7922; Y10T137/7929
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1949-07-15 | 1950-01-14 | 1950-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-15 | 1954-01-14 | 1954-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-15 | 1958-01-14 | 1958-07-16 | $7700.00 | Window Closed / Lapsed |