US1688320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing device for oil-gas apparatus
Assignee: BRUCE MACBETH ENGINE Co
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Filing: 1925-11-12
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Granted: 1928-10-23
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Expires: 1945-11-12
Abstract
No abstract record available.
Inventors
- 👤 Alvin J Bassett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:05
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/22
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) | 1931-10-23 | 1932-04-23 | 1932-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-10-23 | 1936-04-23 | 1936-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-10-23 | 1940-04-23 | 1940-10-23 | $7700.00 | Window Closed / Lapsed |