US3475005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock stem valves
Assignee: Individual
•
Filing: 1966-04-13
•
Granted: 1969-10-28
•
Expires: 1986-04-13
Abstract
No abstract record available.
Inventors
- 👤 Albert L Semon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:02
CPC Classifications
F; F16; F16K; F16K35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US696434A
Cited
US1033149A
Cited
US1071294A
Cited
US1293753A
Cited
US1509146A
Cited
US1565987A
Cited
US2817545A
Cited
US2709091A
Cited
US2924421A
Cited
US3012580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |