US3047929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete pipe making apparatus
Assignee: STEIRO ENGINEERING Co Inc
•
Filing: 1958-03-05
•
Granted: 1962-08-07
•
Expires: 1978-03-05
Abstract
No abstract record available.
Inventors
- 👤 Steiro Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:33
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/02; B28B21/10; B28B21/14; B28B21/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US985888A
Cited
US1140785A
Cited
US1399325A
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GB355793A
Cited
US2356852A
Cited
US2717435A
Cited
US2717679A
Cited
US2839278A
Cited
FR1116341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |