US2441600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined door-hinging, door-checking, and door-holding device
Assignee: Individual
•
Filing: 1943-08-21
•
Granted: 1948-05-18
•
Expires: 1963-08-21
Abstract
No abstract record available.
Inventors
- 👤 Rudolph I Schonitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:51
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/12; E05C17/20; E05C17/203; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/1284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US313457A
Cited
US2147133A
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US2141298A
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US2218372A
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US2163323A
Cited
US2228876A
Cited
US2291412A
Cited
US2219800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |