US2587583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock means for door control mechanism
Assignee: RUDOLPH I SCHONITZER
•
Filing: 1947-01-21
•
Granted: 1952-03-04
•
Expires: 1967-01-21
Abstract
No abstract record available.
Inventors
- 👤 Edwin L Allen
- 👤 Vito Angelo R De
- 👤 Harold B Muster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:20
CPC Classifications
E; E05; E05B; E05B17/00; E05B17/0025; E05B17/0033; E05B17/0037; E05B85/00; E05B85/20; E05B85/24; E05B85/243; Y; Y10; Y10S; Y10S292/00; Y10S292/27; Y10S292/37; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1047; Y10T292/1062; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1061177A
Cited
US1991822A
Cited
US2094413A
Cited
US2231075A
Cited
US2322892A
Cited
US2468644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |