US1327769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preparation of inert gases
Assignee: Individual
•
Filing: 1918-07-02
•
Granted: 1920-01-13
•
Expires: 1938-07-02
Abstract
No abstract record available.
Inventors
- 👤 Molas Edouard Elie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:57
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; B; B60; B60C; B60C23/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
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) | 1923-01-12 | 1923-07-14 | 1924-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-01-12 | 1927-07-14 | 1928-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-01-12 | 1931-07-14 | 1932-01-13 | $7700.00 | Window Closed / Lapsed |