US1736175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doorcheck
Assignee: CONDOR Co
•
Filing: 1928-03-03
•
Granted: 1929-11-19
•
Expires: 1948-03-03
Abstract
No abstract record available.
Inventors
- 👤 Rosenthal Cerf
- 👤 Armistead Hubert Mcl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:42
CPC Classifications
E; E05; E05F; E05F5/00; E05F5/02; E05F5/06; E05F5/08; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/21; E05Y2201/212; E05Y2201/262; E05Y2201/264
Claims Analysis
Total Claims: 0
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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) | 1932-11-18 | 1933-05-20 | 1933-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-11-18 | 1937-05-20 | 1937-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-11-18 | 1941-05-20 | 1941-11-19 | $7700.00 | Window Closed / Lapsed |