US2539741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Septic tank forming means
Assignee: V RAY VAN WEY
•
Filing: 1947-12-12
•
Granted: 1951-01-30
•
Expires: 1967-12-12
Abstract
No abstract record available.
Inventors
- 👤 Paul V Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:41
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/28; B28B7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US738769A
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US788175A
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US967030A
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US1049112A
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US1422674A
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US1591759A
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US1708864A
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US1902171A
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US2086154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |