US2700528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly
Assignee: Individual
•
Filing: 1951-03-19
•
Granted: 1955-01-25
•
Expires: 1971-03-19
Abstract
No abstract record available.
Inventors
- 👤 Glenn R Blackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:10
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/02; F16K5/0257; F16K5/0264; F16K5/08; F16K5/14; F16K5/16; F16K5/162
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US514180A
Cited
USRE18244E
Cited
US1084185A
Cited
US2238385A
Cited
US2392880A
Cited
US2443995A
Cited
US2501150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |