US2396923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poison gas protection
Assignee: Individual
•
Filing: 1942-04-17
•
Granted: 1946-03-19
•
Expires: 1962-04-17
Abstract
No abstract record available.
Inventors
- 👤 Mendelsohn Majer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:37
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/15; D06M11/00; D06M11/32; D06M11/36; D06M11/48; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31768; Y10T428/31772; Y10T428/31775
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) | 1949-03-18 | 1949-09-17 | 1950-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-03-18 | 1953-09-17 | 1954-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-03-18 | 1957-09-17 | 1958-03-19 | $7700.00 | Window Closed / Lapsed |