US2578331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bedspring
Assignee: Moore Co
•
Filing: 1946-06-12
•
Granted: 1951-12-11
•
Expires: 1966-06-12
Abstract
No abstract record available.
Inventors
- 👤 Calvin F White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:54
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US530248A
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US816075A
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US898429A
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US1124031A
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US2185036A
Cited
US2315706A
Cited
US2239062A
Cited
US2313171A
Cited
US2332041A
Cited
US2366846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |