US3196764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced concrete highway structures
Assignee: Individual
•
Filing: 1961-05-22
•
Granted: 1965-07-27
•
Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Conrad J Grieder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:15
CPC Classifications
E; E01; E01D; E01D19/00; E01C; E01C19/00; E01C19/50; E01C19/502; E01C19/504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US329342A
Cited
US993244A
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US1265395A
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US1863115A
Cited
US2445197A
Cited
US2761423A
Cited
US2707221A
Cited
US2963826A
Cited
US2938437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |