US2861833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal structures
Assignee: Stoffel Seals Corp
•
Filing: 1953-11-10
•
Granted: 1958-11-25
•
Expires: 1973-11-10
Abstract
No abstract record available.
Inventors
- 👤 Nierhaus Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:00
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; G09F3/03; G09F3/0305; G09F3/0323; Y; Y10; Y10T; Y10T292/00; Y10T292/48; Y10T292/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1324557A
Cited
US1821418A
Cited
US2611199A
Cited
US2662789A
Cited
US2610878A
Cited
US2613095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |