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US2681561A
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Masonry stave silo
Assignee: Individual
•
Filing: 1950-07-28
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Granted: 1954-06-22
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Expires: 1970-07-28
Abstract
No abstract record available.
Inventors
- 👤 Fallis F Rees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:38
CPC Classifications
E; E04; E04H; E04H7/00; E04H7/22; E04H7/24; E04H7/26; E04H7/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US433219A
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US1107779A
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US1093766A
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US1143954A
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US1332409A
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US1499483A
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US1495896A
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US1798410A
Cited
US2141397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |