US3177619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced concrete slab and tension connector therefor
Assignee: Granite City Steel Co
•
Filing: 1962-06-29
•
Granted: 1965-04-13
•
Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Irwin A Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:58
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/16; E04B5/32; E04B5/36; E04B5/38; E04B5/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US757519A
Cited
US743086A
Cited
US836683A
Cited
US1073542A
Cited
US1662896A
Cited
US1748861A
Cited
GB332331A
Cited
US1986999A
Cited
US2435998A
Cited
US2957555A
Cited
US2987855A
Cited
US3094813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |