US3028201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat cushioning means
Assignee: Heckethorn Manufacturing and Supply Co
•
Filing: 1960-11-07
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Granted: 1962-04-03
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Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 John E Heckethorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:39
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/62; A47C7/72; A47C7/74; A47C7/742; A47C7/36; A47C7/40; A47C7/42; A47C7/425; B; B60; B60N; B60N2/00; B60N2/70; B60N2/7023; B60N2/7035; Y; Y10; Y10S; Y10S297/00; Y10S297/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |