US3503584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anchor stud holding assembly for concrete forms
Assignee: ALLAN F ERHART
•
Filing: 1967-05-01
•
Granted: 1970-03-31
•
Expires: 1987-05-01
Abstract
No abstract record available.
Inventors
- 👤 Allan F Erhart
- 👤 Augustus F Erhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:17
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/4157; Y; Y10; Y10S; Y10S411/00; Y10S411/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1072361A
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US2027651A
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US2894287A
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US2880462A
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US3067546A
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US3081497A
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US3135999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |