Patent US2559939A successfully refreshed from Google Patents.
US2559939A
Expired / Lapsed
US
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Cradle rocking spring mechanism
Assignee: Individual
•
Filing: 1948-03-05
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Granted: 1951-07-10
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Expires: 1968-03-05
Abstract
No abstract record available.
Inventors
- 👤 Carlson Olof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:11
CPC Classifications
A; A47; A47D; A47D9/00; A47D9/02; A47D9/057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US459708A
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US579256A
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US579323A
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US1170760A
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US746166A
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US1132432A
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US1342857A
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US1549648A
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US2531858A
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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) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |