US2215751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring suspension
Assignee: Individual
•
Filing: 1937-10-27
•
Granted: 1940-09-24
•
Expires: 1957-10-27
Abstract
No abstract record available.
Inventors
- 👤 Stephen L C Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:56
CPC Classifications
B; B60; B60G; B60G21/00; B60G13/00; B60G13/001; B60G13/005; B60G13/008; B60G15/00; B60G15/08; B60G15/12; B60G21/02; B60G21/04; B60G21/05; B60G21/055; B60G3/00; B60G3/01; F; F16; F16F; F16F9/00; F16F9/06; B60G2204/00; B60G2204/40; B60G2204/418; B60G2204/423; B60G2204/4232
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) | 1943-09-24 | 1944-03-25 | 1944-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-24 | 1948-03-25 | 1948-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-24 | 1952-03-25 | 1952-09-24 | $7700.00 | Window Closed / Lapsed |