US3382632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed, interlocked block wall
Assignee: PAUL W GROFCSIK
•
Filing: 1965-07-28
•
Granted: 1968-05-14
•
Expires: 1985-07-28
Abstract
No abstract record available.
Inventors
- 👤 Paul W Grofcsik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:16
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/04; E04B2/06; E04B2/10; E04B2002/0202; E04B2002/0243; E04B2002/0254
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US411027A
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GB190010180A
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US869770A
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US1630698A
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FR647249A
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US2684589A
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FR980948A
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FR1157975A
Cited
FR1274931A
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US3296758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |