Patent US1466356A successfully refreshed from Google Patents.
US1466356A
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Method of and apparatus for mixing and proportioning gases
Assignee: SURFACE COMB CO Inc
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Filing: 1921-06-14
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Granted: 1923-08-28
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Expires: 1941-06-14
Abstract
No abstract record available.
Inventors
- 👤 Eddison William Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:30
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/10
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) | 1926-08-27 | 1927-02-26 | 1927-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-08-27 | 1931-02-26 | 1931-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-08-27 | 1935-02-26 | 1935-08-28 | $7700.00 | Window Closed / Lapsed |