US3443814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically balanced radial seal
Assignee: INTERN PACKINGS CORP
•
Filing: 1967-01-18
•
Granted: 1969-05-13
•
Expires: 1987-01-18
Abstract
No abstract record available.
Inventors
- 👤 John Charles Dahlheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:51
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/46; F16J15/48; F16J15/16; F16J15/32; F16J15/3204; F16J15/3232; F16J15/3236; Y; Y10; Y10S; Y10S277/00; Y10S277/926
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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |