US2850784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for making concrete pipe
Assignee: Price Brothers Co
•
Filing: 1953-01-30
•
Granted: 1958-09-09
•
Expires: 1973-01-30
Abstract
No abstract record available.
Inventors
- 👤 Paul L Osweiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:46
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/02; B28B21/10; B28B21/22; B28B21/30; B28B21/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1117466A
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AU2182429A
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US2569538A
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US2675333A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |