US2856165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruding device
Assignee: STRUCTURAL CLAY PRODUCTS RES F
•
Filing: 1957-06-19
•
Granted: 1958-10-14
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Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Eric H Gordtney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/165; B; B28; B28C; B28C5/00; B28C5/42; B28C5/4282; B28C7/00; B28C7/16; B28C7/162; B28C7/163; B28C7/165; E04F21/1652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1651671A
Cited
US1674989A
Cited
US1753716A
Cited
US1935390A
Cited
US2161553A
Cited
US2608393A
Cited
US2587127A
Cited
US2743912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |