Patent US2912850A successfully refreshed from Google Patents.
US2912850A
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US
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Stud shoe
Assignee: MAX C RICHARDSON
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Filing: 1957-08-27
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Granted: 1959-11-17
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Expires: 1977-08-27
Abstract
No abstract record available.
Inventors
- 👤 Lloyd M Houlding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:56
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/30; E04B; E04B2/00; E04B2/74; E04B2/7407; E04B2/7453; E04B2/7457; E04B2/76; E04B2/766; E04B2/72; E04B2/723; E04B2/7409; E04B2/7411; E04B2002/726
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |