US1445486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air spring
Assignee: Individual
•
Filing: 1921-12-13
•
Granted: 1923-02-13
•
Expires: 1941-12-13
Abstract
No abstract record available.
Inventors
- 👤 Frederick De L Cats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:46
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/02; F16F9/04; F16F9/0472; B; B60; B60G; B60G11/00; B60G11/32; B60G11/34; B60G11/46; B60G11/465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-02-12 | 1926-08-14 | 1927-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-02-12 | 1930-08-14 | 1931-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-02-12 | 1934-08-14 | 1935-02-13 | $7700.00 | Window Closed / Lapsed |