US3035810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing valves for gas control
Assignee: Thermo Technical Development Ltd
•
Filing: 1958-06-25
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Granted: 1962-05-22
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Expires: 1978-06-25
Abstract
No abstract record available.
Inventors
- 👤 Lowe Walter Max
- 👤 Squirrel Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:10
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/02; F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/20; F16K1/2007; F16K1/2014; F16K1/2028; F16K1/2042; F16K1/205; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190827909A
Cited
US1847385A
Cited
US2079164A
Cited
US2227767A
Cited
DE739290C
Cited
US2741264A
Cited
US2893685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |