Patent US2929124A successfully refreshed from Google Patents.
US2929124A
Expired / Lapsed
US
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Spigot mold for concrete pipes
Assignee: United Concrete Pipe Corp
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Filing: 1954-10-04
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Granted: 1960-03-22
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Expires: 1974-10-04
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:09
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/70; B28B21/74; Y; Y10; Y10S; Y10S425/00; Y10S425/044; Y10S425/058
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1103270A
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US1584595A
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US2002510A
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US2337998A
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US2447703A
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US2728127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |