US2991795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self closing measuring valve
Assignee: Speakman Co
•
Filing: 1957-09-16
•
Granted: 1961-07-11
•
Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Fraser James
- 👤 Edward S Mclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:50
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/06; F16K21/10; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/4336; Y10T137/7504; Y10T137/7613
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190611239A
Cited
US1018463A
Cited
FR455059A
Cited
US2154811A
Cited
US2181581A
Cited
US2212308A
Cited
US2469946A
Cited
US2675206A
Cited
US2743079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |