US2468558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension cushion
Assignee: Individual
•
Filing: 1945-09-26
•
Granted: 1949-04-26
•
Expires: 1965-09-26
Abstract
No abstract record available.
Inventors
- 👤 Gustave P Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:56
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/18; A47C7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US135580A
Cited
US1094787A
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US1725479A
Cited
US1906233A
Cited
US2012042A
Cited
US2067621A
Cited
US2281341A
Cited
US2283116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |