US3049787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extruding prestressed concrete products
Assignee: Individual
•
Filing: 1959-04-06
•
Granted: 1962-08-21
•
Expires: 1979-04-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Ralph Haunan
- 👤 Hannan Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:27
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/08; B28B1/084; B28B23/00; B28B23/02; B28B23/04; B28B23/06; B28B3/00; B28B3/20; B28B3/22; B28B3/228
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920716A
Cited
US938223A
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US1058642A
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US1146477A
Cited
US1445724A
Cited
US1887244A
Cited
US2818790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |