US1867589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hold open and closing mechanism for double doors
Assignee: Sargent Manufacturing Co
•
Filing: 1929-03-07
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Granted: 1932-07-19
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Expires: 1949-03-07
Abstract
No abstract record available.
Inventors
- 👤 Clayton L Phillips
- 👤 Herbert E Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:31
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/40; Y; Y10; Y10S; Y10S292/00; Y10S292/21; Y10T; Y10T292/00; Y10T292/28; Y10T292/282; Y10T292/301
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) | 1935-07-19 | 1936-01-18 | 1936-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-19 | 1940-01-18 | 1940-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-19 | 1944-01-18 | 1944-07-19 | $7700.00 | Window Closed / Lapsed |