US3305878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushion construction
Assignee: Individual
•
Filing: 1964-03-02
•
Granted: 1967-02-28
•
Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Halcyon W Hellbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:20
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/142; A47C27/146; A47G; A47G9/00; A47G9/10; A61; A61G; A61G7/00; A61G7/05; A61G7/057; A61G7/05723
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US765519A
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US1385355A
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US1457203A
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US2336707A
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US2562725A
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US2765480A
Cited
US2831532A
Cited
GB805419A
Cited
GB803936A
Cited
US2877472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |