US1621847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic door closing and locking means
Assignee: Individual
•
Filing: 1924-09-03
•
Granted: 1927-03-22
•
Expires: 1944-09-03
Abstract
No abstract record available.
Inventors
- 👤 James B Mccutchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:12
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/56; E05B; E05B45/00; E05B45/06; E05B47/00; E05B47/0001; E05B47/0002; E05B47/02; E05B47/023; E05B47/026; E05B47/0003; E05B47/0004; Y; Y10; Y10S; Y10S70/00; Y10S70/49; Y10T; Y10T70/00; Y10T70/60; Y10T70/70; Y10T70/7051; Y10T70/7062
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) | 1930-03-21 | 1930-09-20 | 1931-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-03-21 | 1934-09-20 | 1935-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-03-21 | 1938-09-20 | 1939-03-22 | $7700.00 | Window Closed / Lapsed |