Patent US2772468A successfully refreshed from Google Patents.
US2772468A
Expired / Lapsed
US
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Dowel bar or tie bar supporting side forms
Assignee: Individual
•
Filing: 1951-06-16
•
Granted: 1956-12-04
•
Expires: 1971-06-16
Abstract
No abstract record available.
Inventors
- 👤 The Union Savings Trus Company
- 👤 Carl J Heltzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:06
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/50; E01C19/502; E01C19/504; E04; E04G; E04G13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1329177A
Cited
US1602658A
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US1550077A
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US1764029A
Cited
US1944511A
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US1991256A
Cited
US2012590A
Cited
US2235001A
Cited
US2489851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |