US2437049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ear protector
Assignee: Consolidated Vultee Aircraft Corp
•
Filing: 1945-01-05
•
Granted: 1948-03-02
•
Expires: 1965-01-05
Abstract
No abstract record available.
Inventors
- 👤 Salisbury Robert Henry
- 👤 Oehser Edward Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:45
CPC Classifications
A; A61; A61F; A61F11/00; A61F11/06; A61F11/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1312493A
Cited
DE329373C
Cited
US997673A
Cited
US1683928A
Cited
US2120231A
Cited
US2215198A
Cited
US2345842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |