US2741476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock-absorbent spring assembly
Assignee: Individual
•
Filing: 1953-03-20
•
Granted: 1956-04-10
•
Expires: 1973-03-20
Abstract
No abstract record available.
Inventors
- 👤 David E Burney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:30
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/04; F16F1/12; F16F1/125; B; B60; B60G; B60G11/00; B60G11/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1539272A
Cited
US2000905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |