US2753431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for lowering ice-buckled cold room floors
Assignee: V C Patterson & Associates Inc
•
Filing: 1954-12-03
•
Granted: 1956-07-03
•
Expires: 1974-12-03
Abstract
No abstract record available.
Inventors
- 👤 Alonzo W Ruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:54
CPC Classifications
F; F25; F25D; F25D13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1349136A
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US1450658A
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US1788107A
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US2138217A
Cited
US2525376A
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US2561676A
Cited
US2675456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |