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Patent US3423072A successfully refreshed from Google Patents.
US3423072A
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Demountable structural assembly
Assignee: Individual
•
Filing: 1967-05-18
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Granted: 1969-01-21
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Expires: 1987-05-18
Abstract
No abstract record available.
Inventors
- 👤 Morey Bernstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:51
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/14; E04H17/16; E04H17/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1068206A
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US1034983A
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US1446930A
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US1521240A
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US1811335A
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US2417578A
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US2651502A
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US2787198A
Cited
US2789311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |