Patent US2004947A successfully refreshed from Google Patents.
US3469362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall construction assembly
Assignee: Revere Copper and Brass Inc
•
Filing: 1968-02-21
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Granted: 1969-09-30
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Expires: 1988-02-21
Abstract
No abstract record available.
Inventors
- 👤 Leland J La Tart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:35
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/76; E04B2/78; E04B2/7809; E04B2/7818; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04B1/942
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2128797A
Cited
US2821450A
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US3066774A
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US3078968A
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US3192671A
Cited
US3158236A
Cited
GB1098681A
Cited
US3386221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |