US3537223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced building elements
Assignee: CHAIM H LERCHENTHAL
•
Filing: 1965-11-17
•
Granted: 1970-11-03
•
Expires: 1985-11-17
Abstract
No abstract record available.
Inventors
- 👤 Chaim H Lerchenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:13
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/40; E04C2/02; E04C2/26; E04C2/28; E04C2/32; E04C2/328
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2733482A
Cited
US720941A
Cited
US1209693A
Cited
US1684624A
Cited
US1807323A
Cited
US1763916A
Cited
US1898864A
Cited
US1940220A
Cited
US2023452A
Cited
GB408528A
Cited
US2071455A
Cited
US2140226A
Cited
US2320480A
Cited
US2643745A
Cited
US2703004A
Cited
US2810285A
Cited
US3257764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |