Patent US3344572A successfully refreshed from Google Patents.
US3344572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete building structures with prelaminated plasterboard facing sheets
Assignee: TRUSTEEL CORP UNIVERSAL Ltd
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Filing: 1965-01-04
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Granted: 1967-10-03
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Sell George James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:45
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84; E04B2/86; E04B2/8652; E04B2002/8676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1593180A
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US1714987A
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GB336567A
Cited
US2037482A
Cited
US2251499A
Cited
US2356309A
Cited
GB755951A
Cited
US3186131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |