US784228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating and indicating device for compressed air.
Assignee: Individual
•
Filing: 1904-05-17
•
Granted: 1905-03-07
•
Expires: 1924-05-17
Abstract
No abstract record available.
Inventors
- 👤 Clarence H Richwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:55
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/32
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) | 1908-03-06 | 1908-09-05 | 1909-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-03-06 | 1912-09-05 | 1913-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-03-06 | 1916-09-05 | 1917-03-07 | $7700.00 | Window Closed / Lapsed |