Patent US1303370A successfully refreshed from Google Patents.
US2043976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined door-holding and door-checking device
Assignee: Individual
•
Filing: 1935-02-28
•
Granted: 1936-06-09
•
Expires: 1955-02-28
Abstract
No abstract record available.
Inventors
- 👤 Rudolph I Schonitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:58
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/12; E05C17/20; E05C17/203; E05C17/206; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0814; Y10T292/0815; Y10T292/0876; Y10T292/0878; Y10T292/0879; Y10T292/0885; Y10T292/28; Y10T292/301; Y10T292/68
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-06-09 | 1939-12-09 | 1940-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-06-09 | 1943-12-09 | 1944-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-06-09 | 1947-12-09 | 1948-06-09 | $7700.00 | Window Closed / Lapsed |