US2592073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door stop mechanism
Assignee: Individual
•
Filing: 1946-12-31
•
Granted: 1952-04-08
•
Expires: 1966-12-31
Abstract
No abstract record available.
Inventors
- 👤 Schwarzkopf Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:40
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/46; E05C17/48; E05F; E05F5/00; E05F5/06; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/47; E05Y2201/488; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0997; Y10T292/68; Y10T292/696
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |