US2784503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shakeproof screw fastening
Assignee: Individual
•
Filing: 1954-06-29
•
Granted: 1957-03-12
•
Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 John W Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:01
CPC Classifications
A; A43; A43C; A43C15/00; A43C15/16; A43C15/161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1768426A
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US1945840A
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US1982588A
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US2223794A
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US2491596A
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US2608007A
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US2635363A
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US2689417A
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US2682714A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |