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Patent US3517398A successfully refreshed from Google Patents.
US3517398A
Expired / Lapsed
US
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Innerspring unit construction
Assignee: National Bedding and Furniture Industries
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Filing: 1968-05-20
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Granted: 1970-06-30
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Expires: 1988-05-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas N Patton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:18
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/06; A47C27/07; A47C23/00; A47C23/04; A47C23/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3242505A
Cited
US3327331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |