US2621887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retainer for plug valve barrels
Assignee: Individual
•
Filing: 1949-05-19
•
Granted: 1952-12-16
•
Expires: 1969-05-19
Abstract
No abstract record available.
Inventors
- 👤 Todd Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:00
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/567; F; F16; F16K; F16K5/00; F16K5/02; F16K5/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |