Patent US1390725A successfully refreshed from Google Patents.
US1390725A
Expired / Lapsed
US
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Automatically-locked metering door and gate device
Assignee: Individual
•
Filing: 1919-04-26
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Granted: 1921-09-13
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Expires: 1939-04-26
Abstract
No abstract record available.
Inventors
- 👤 Ruth James Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:49
CPC Classifications
E; E06; E06B; E06B11/00; E06B11/08; E06B11/085; E06B5/00
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) | 1924-09-12 | 1925-03-14 | 1925-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-09-12 | 1929-03-14 | 1929-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-09-12 | 1933-03-14 | 1933-09-13 | $7700.00 | Window Closed / Lapsed |