Patent US2526183A successfully refreshed from Google Patents.
US2526183A
Expired / Lapsed
US
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Sinuous spring cushion assembly
Assignee: American Metal Products Co
•
Filing: 1949-03-18
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Granted: 1950-10-17
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Expires: 1969-03-18
Abstract
No abstract record available.
Inventors
- 👤 Richard J Williams
- 👤 Glynn L Stine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:01
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US133102A
Cited
US2185036A
Cited
US2251049A
Cited
CH206149A
Cited
US2202301A
Cited
US2264006A
Cited
US2480667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |