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US3466831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandwich-type building panel
Assignee: MONCRIEF LENOIR Mfg CO
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Filing: 1968-05-06
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Granted: 1969-09-16
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Expires: 1988-05-06
Abstract
No abstract record available.
Inventors
- 👤 Walter F Lenoir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:49
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/292; E04C2/30; E04C2/32; E04C2/322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US162722A
Cited
DE467209C
Cited
US3209502A
Cited
US3228162A
Cited
FR1392017A
Cited
US3320711A
Cited
US3290845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |