US1250319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for delivering a mixture of gas and air.
Assignee: Individual
•
Filing: 1917-05-24
•
Granted: 1917-12-18
•
Expires: 1937-05-24
Abstract
No abstract record available.
Inventors
- 👤 George Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:33
CPC Classifications
F; F02; F02M; F02M21/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/7722; Y10T137/7748; Y10T137/7749
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) | 1920-12-17 | 1921-06-18 | 1921-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-12-17 | 1925-06-18 | 1925-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-12-17 | 1929-06-18 | 1929-12-18 | $7700.00 | Window Closed / Lapsed |