US3384339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamperproof valve handle
Assignee: WILLIAM E CORNELL
•
Filing: 1965-09-10
•
Granted: 1968-05-21
•
Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Iii William E Cornell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:40
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/60; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7043; Y10T137/7062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US382637A
Cited
GB189407570A
Cited
US976720A
Cited
US1855414A
Cited
US2073541A
Cited
US2838270A
Cited
US3174717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |