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Patent US4516372B1 successfully refreshed from Google Patents.
US4516372B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete formwork
Assignee: CIU Corp
•
Filing: 1983-07-20
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Granted: 2000-04-25
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Expires: 2003-07-20
Abstract
No abstract record available.
Inventors
- 👤 George A Grutsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:30
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84; E04B2/86; E04B2/8611; E04B2/8617
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-25 | 2003-10-25 | 2004-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-25 | 2007-10-25 | 2008-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-25 | 2011-10-25 | 2012-04-25 | $7700.00 | Window Closed / Lapsed |