US3307822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete wall construction form
Assignee: International Concrete Systems Co
•
Filing: 1963-01-07
•
Granted: 1967-03-07
•
Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 Robert K Stout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:05
CPC Classifications
E; E04; E04G; E04G9/00; E04G9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US916084A
Cited
US1123261A
Cited
US1147704A
Cited
US1636396A
Cited
US1564578A
Cited
US1750511A
Cited
US2627100A
Cited
US2819495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |