US1850779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constettcition
Assignee: —
•
Filing: —
•
Granted: 1932-03-22
•
Expires: 1949-03-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/14; E04H17/1413; E04H17/1417; E04H17/1426; E04H17/1439; E04H17/1447; E04H17/1488
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) | 1935-03-22 | 1935-09-21 | 1936-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-22 | 1939-09-21 | 1940-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-22 | 1943-09-21 | 1944-03-22 | $7700.00 | Window Closed / Lapsed |