Patent US2748909A successfully refreshed from Google Patents.
US2748909A
Expired / Lapsed
US
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Ground anchor
Assignee: McGraw Electric Co
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Filing: 1950-03-20
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Granted: 1956-06-05
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Expires: 1970-03-20
Abstract
No abstract record available.
Inventors
- 👤 William O Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:09
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/74; E02D5/80; E02D5/803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US817044A
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US1618368A
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US2159268A
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US2362230A
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US2403150A
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US2596346A
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US2538409A
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US2633212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |