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Patent US3264828A successfully refreshed from Google Patents.
US3264828A
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US
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Drainage line construction
Assignee: LA BOLSA TILE CO
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Filing: 1962-10-19
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Granted: 1966-08-09
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Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
- 👤 Eddie D Harpold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:39
CPC Classifications
E; E02; E02B; E02B11/00; E02B11/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US342659A
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US927606A
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US764603A
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US968226A
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US1538669A
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US1782412A
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US3073735A
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US2798768A
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US3081599A
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US3103789A
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |