US3002776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded packing gland
Assignee: Individual
•
Filing: 1957-07-11
•
Granted: 1961-10-03
•
Expires: 1977-07-11
Abstract
No abstract record available.
Inventors
- 👤 Sheridan P Tschappat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:25
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/20; E; E21; E21B; E21B33/00; E21B33/02; E21B33/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US206548A
Cited
US1998892A
Cited
US2062518A
Cited
US2056687A
Cited
US2145884A
Cited
GB633021A
Cited
US2564912A
Cited
US2697623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |