Patent US1830610A successfully refreshed from Google Patents.
US1830610A
Expired / Lapsed
US
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Process of producing mixtures of hydrogen and nitrogen
Assignee: Individual
•
Filing: 1926-02-09
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Granted: 1931-11-03
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Expires: 1946-02-09
Abstract
No abstract record available.
Inventors
- 👤 Linde Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:05
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/06; C; C10; C10K; C10K1/00; C10K1/08; C10K1/16; C10K1/165; Y; Y10; Y10S; Y10S62/00; Y10S62/931; Y10S62/934
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) | 1934-11-02 | 1935-05-04 | 1935-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-11-02 | 1939-05-04 | 1939-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-11-02 | 1943-05-04 | 1943-11-03 | $7700.00 | Window Closed / Lapsed |