Patent US2762252A successfully refreshed from Google Patents.
US2762252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-piece collapsible sheet metal bolt anchor
Assignee: Diamond Expansion Bolt Co Inc
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Filing: 1955-04-27
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Granted: 1956-09-11
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Expires: 1975-04-27
Abstract
No abstract record available.
Inventors
- 👤 Karitzky John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:08
CPC Classifications
F; F16; F16B; F16B29/00; F16B13/00; F16B13/04; F16B13/06; F16B13/061; F16B37/00; F16B37/04; F16B37/041; F16B37/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2018251A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |