US1509319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve chamber for gas masks
Assignee: Individual
•
Filing: 1921-08-23
•
Granted: 1924-09-23
•
Expires: 1941-08-23
Abstract
No abstract record available.
Inventors
- 👤 Saunier Hippolyte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:42
CPC Classifications
A; A62; A62B; A62B18/00; A62B18/08; A62B18/10; F; F16; F16K; F16K15/00; F16K15/14; F16K15/148; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/7904
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) | 1927-09-23 | 1928-03-24 | 1928-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-09-23 | 1932-03-24 | 1932-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-09-23 | 1936-03-24 | 1936-09-23 | $7700.00 | Window Closed / Lapsed |