US1156975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for mixing gases.
Assignee: A C Clark & Co
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Filing: 1914-04-01
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Granted: 1915-10-19
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Expires: 1934-04-01
Abstract
No abstract record available.
Inventors
- 👤 Albert Charles Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:08
CPC Classifications
F; F02; F02M; F02M1/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87652; Y10T137/8766; Y10T137/87668
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) | 1918-10-18 | 1919-04-19 | 1919-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-10-18 | 1923-04-19 | 1923-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-10-18 | 1927-04-19 | 1927-10-19 | $7700.00 | Window Closed / Lapsed |