US1109174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-valve.
Assignee: Individual
•
Filing: 1913-02-21
•
Granted: 1914-09-01
•
Expires: 1933-02-21
Abstract
No abstract record available.
Inventors
- 👤 Carl H Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/08; F24D19/081
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) | 1917-08-31 | 1918-03-02 | 1918-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-08-31 | 1922-03-02 | 1922-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-08-31 | 1926-03-02 | 1926-09-01 | $7700.00 | Window Closed / Lapsed |