US2829538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety adapter for operating handles of valves
Assignee: Individual
•
Filing: 1953-02-06
•
Granted: 1958-04-08
•
Expires: 1973-02-06
Abstract
No abstract record available.
Inventors
- 👤 Ervin H Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:58
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02; F16K35/027; G; G05; G05G; G05G1/00; G05G1/08; G05G1/082; Y; Y10; Y10S; Y10S116/00; Y10S116/23; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20642; Y10T74/20732; Y10T74/20762; Y10T74/20834; Y10T74/2084
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2603325A
Cited
US1020223A
Cited
US1537227A
Cited
US2068693A
Cited
US2390792A
Cited
US2427310A
Cited
US2454122A
Cited
US2527458A
Cited
US2602351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |