US2833307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air metering valve for ether control
Assignee: GOMCO SURGICAL Manufacturing CORP
•
Filing: 1954-07-23
•
Granted: 1958-05-06
•
Expires: 1974-07-23
Abstract
No abstract record available.
Inventors
- 👤 Stanford A Henderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:18
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/14; A61M16/18; F; F16; F16K; F16K3/00; F16K3/22; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/8158; Y10T137/8225; Y10T137/8275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |