US2147518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring suspension
Assignee: Audi AG
•
Filing: 1937-02-06
•
Granted: 1939-02-14
•
Expires: 1957-02-06
Abstract
No abstract record available.
Inventors
- 👤 Boxan Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
A; A23; A23G; A23G9/00; A23G9/04; A23G9/22; A23G9/26; B; B01; B01F; B01F27/00; B01F27/05; B01F27/07; B01F27/072; B01F27/0724; B23; B23B; B23B27/00; B23B27/14; B23B27/148; B23P; B23P15/00; B23P15/28; B23P15/30; B60; B60G; B60G11/00; B60G11/22; B60G11/24; B60G2200/00; B60G2200/10; B60G2200/14; B60G2200/144; B60G2202/00; B60G2202/10; B60G2202/14; B60G2202/142; B60G2202/1422; B60G2204/00; B60G2204/10; B60G2204/14; B60G2204/143; B60G2204/40; B60G2204/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1942-02-13 | 1942-08-15 | 1943-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-13 | 1946-08-15 | 1947-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-13 | 1950-08-15 | 1951-02-14 | $7700.00 | Window Closed / Lapsed |