US2966916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve responsive to changes in speed
Assignee: FIREWEL DEV Co
•
Filing: 1957-07-01
•
Granted: 1961-01-03
•
Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Richard D Cummins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:48
CPC Classifications
B; B64; B64D; B64D10/00; F; F16; F16K; F16K17/00; F16K17/36; F16K31/00; F16K31/44; F16K31/58; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0777; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7808; Y10T137/8593; Y10T137/877; Y10T137/87829
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |