Patent US1727655A successfully refreshed from Google Patents.
Patent US3538654A successfully refreshed from Google Patents.
US3538654A
Expired / Lapsed
US
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Connecting prefabricated panels at the facades of a prefabricated building
Assignee: CSEP SA
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Filing: 1969-08-13
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Granted: 1970-11-10
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Expires: 1989-08-13
Abstract
No abstract record available.
Inventors
- 👤 Luciano Gerola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:56
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/6812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1954730A
Cited
US2329585A
Cited
FR952346A
Cited
US2657570A
Cited
GB814814A
Cited
FR1310670A
Cited
FR1313954A
Cited
BE660732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |