Patent US5273527A successfully refreshed from Google Patents.
US2638243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for cooperatively assembled parts of valve or comparable assemblies
Assignee: Parker Appliance Co
•
Filing: 1949-04-15
•
Granted: 1953-05-12
•
Expires: 1969-04-15
Abstract
No abstract record available.
Inventors
- 👤 Robert H Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:44
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/08; Y; Y10; Y10S; Y10S251/00; Y10S251/90; Y10S285/00; Y10S285/918
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US718643A
Cited
US759081A
Cited
US808457A
Cited
US1478108A
Cited
GB207855A
Cited
US1888459A
Cited
GB504303A
Cited
US2459668A
Cited
US2445802A
Cited
US2537249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |