US937710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drop-stair fire-escape.
Assignee: Individual
•
Filing: 1908-10-19
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Granted: 1909-10-19
•
Expires: 1928-10-19
Abstract
No abstract record available.
Inventors
- 👤 Abraham C Mowrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:03
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/02; E04F11/022; E04F11/025; E04F11/0255
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) | 1912-10-18 | 1913-04-19 | 1913-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-10-18 | 1917-04-19 | 1917-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-10-18 | 1921-04-19 | 1921-10-19 | $7700.00 | Window Closed / Lapsed |