US3530539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve for injection molding machines
Assignee: Individual
•
Filing: 1968-02-02
•
Granted: 1970-09-29
•
Expires: 1988-02-02
Abstract
No abstract record available.
Inventors
- 👤 Jobst Ulrich Gellert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:33
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/27; B29C45/28; B29C45/2806; B29C45/281; B29C2045/2834; B29C2045/2879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2217661A
Cited
US2456778A
Cited
US2770011A
Cited
US2878515A
Cited
US3301928A
Cited
US3400429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |