US2780937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind direction and velocity indicator
Assignee: Individual
•
Filing: 1954-07-01
•
Granted: 1957-02-12
•
Expires: 1974-07-01
Abstract
No abstract record available.
Inventors
- 👤 Artemas J Haynes
- 👤 Earle F Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/02; G01P5/00; G01P5/02; G01P5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB354000A
Cited
US2287612A
Cited
US2522796A
Cited
US2630550A
Cited
US2607891A
Cited
US2665583A
Cited
US2611051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |