Patent US3537222A successfully refreshed from Google Patents.
US3537222A
Expired / Lapsed
US
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Panel wall structure with panel connectors joined by spacer and attaching clips
Assignee: Flangeklamp Corp
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Filing: 1968-11-20
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Granted: 1970-11-03
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Expires: 1988-11-20
Abstract
No abstract record available.
Inventors
- 👤 Robert P Lickliter
- 👤 Earl Abbott
- 👤 John F Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:10
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/76; E04B2/78; E04B2/7854; E06; E06B; E06B1/00; E06B1/04; E06B1/12; E06B1/18; E04B2/7407; E04B2/7409; E04B2/7411; E04B2002/7461; E04B2002/7462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB584959A
Cited
US963779A
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US1339360A
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US1946560A
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US2030217A
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US2101952A
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US2132601A
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US2227452A
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US2667241A
Cited
US2566622A
Cited
US3381438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |