US3091818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring-closed swinging shock absorbing door
Assignee: Individual
•
Filing: 1960-07-13
•
Granted: 1963-06-04
•
Expires: 1980-07-13
Abstract
No abstract record available.
Inventors
- 👤 Henry B Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:32
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E06; E06B; E06B3/00; E06B3/70; E06B3/80
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2734234A
Cited
GB189611012A
Cited
US1186720A
Cited
US1455967A
Cited
US1776005A
Cited
US2337716A
Cited
US2593403A
Cited
US2829915A
Cited
US2797435A
Cited
US2827670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |