US1376727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direction-indicator for air and marine craft
Assignee: Individual
•
Filing: 1918-02-23
•
Granted: 1921-05-03
•
Expires: 1938-02-23
Abstract
No abstract record available.
Inventors
- 👤 Pentz Florence Lyon
- 👤 Pentz James Bolton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:15
CPC Classifications
G; G01; G01C; G01C17/00; G01C17/02; G01C17/04; G01C17/06; G01C17/08; G01C17/10; G01C17/16; G01C9/00
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) | 1924-05-02 | 1924-11-01 | 1925-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-05-02 | 1928-11-01 | 1929-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-05-02 | 1932-11-01 | 1933-05-03 | $7700.00 | Window Closed / Lapsed |