Patent US4978805A successfully refreshed from Google Patents.
US2989155A
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Connecting device for composite prefabricated building construction panel
Assignee: Tecfab Inc
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Filing: 1960-07-13
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Granted: 1961-06-20
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Expires: 1980-07-13
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Ocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:57
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/38; E04C2/384; E04F; E04F11/00; E04F11/18; E04F11/181; E04F11/1851
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |