US875175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air and gas mixer.
Assignee: HERBERT F TYLER
•
Filing: 1907-06-04
•
Granted: 1907-12-31
•
Expires: 1927-06-04
Abstract
No abstract record available.
Inventors
- 👤 William H Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:14
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1910-12-30 | 1911-07-01 | 1911-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-12-30 | 1915-07-01 | 1915-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-12-30 | 1919-07-01 | 1919-12-31 | $7700.00 | Window Closed / Lapsed |