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US3419920A
Expired / Lapsed
US
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Mattress
Assignee: FORREST E MADDUX JR
•
Filing: 1966-10-17
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Granted: 1969-01-07
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Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Forrest E Maddux
- 👤 John R Greeno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:20
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/142; A47C27/146; A47C27/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3188660A
Cited
US2469084A
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US2924833A
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US3023429A
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US2982976A
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US3210781A
Cited
US3142070A
Cited
US3249952A
Cited
US3308490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |