US2668068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for rotary shafts
Assignee: NORDEN LAB CORP
•
Filing: 1949-09-08
•
Granted: 1954-02-02
•
Expires: 1969-09-08
Abstract
No abstract record available.
Inventors
- 👤 Bredemeier Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:37
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3404; F16J15/3408; F16J15/3412; F16J15/3416; Y; Y10; Y10S; Y10S285/00; Y10S285/923
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US883155A
Cited
DE588766C
Cited
GB483280A
Cited
US2149524A
Cited
US2252554A
Cited
US2362436A
Cited
US2373463A
Cited
US2467543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |