US2553813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wing nut
Assignee: Imperial Brass Manufacturing Co
•
Filing: 1945-05-16
•
Granted: 1951-05-22
•
Expires: 1965-05-16
Abstract
No abstract record available.
Inventors
- 👤 August C Dobrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:12
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US36023A
Cited
US397988A
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US1629095A
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US1212318A
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US1589063A
Cited
US1616437A
Cited
US2049104A
Cited
US2259834A
Cited
US2305427A
Cited
US2383141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |