Patent US3461636A successfully refreshed from Google Patents.
US3461636A
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US
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Elongated structural units
Assignee: Individual
•
Filing: 1965-06-01
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Granted: 1969-08-19
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey Benjamin Hern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:40
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/30; E04C3/32; E04B; E04B1/00; E04B1/18; E04B1/24; E04C3/02; E04C3/04; E04C3/08; E04C3/09; E04B1/2403; E04B2001/2415; E04B2001/2448; E04B2001/2466; E04B2001/2472; E04C2003/0486; E04C2003/0491
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1649577A
Cited
US1837374A
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US1924881A
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US1910264A
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US2145407A
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US3025577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |