US3431765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic extrusion press
Assignee: LOMBARD CORP
•
Filing: 1964-10-14
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Granted: 1969-03-11
•
Expires: 1984-10-14
Abstract
No abstract record available.
Inventors
- 👤 Daniel L Lombard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:35
CPC Classifications
B; B21; B21C; B21C33/00; B21C23/00; B21C23/21; B21C23/212; B21C23/215
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US820540A
Cited
US1037213A
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US1250841A
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US1868573A
Cited
GB345039A
Cited
GB609626A
Cited
US2614302A
Cited
US2720970A
Cited
US2728453A
Cited
US2938706A
Cited
US2941665A
Cited
US3025959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |