Patent US2779979A successfully refreshed from Google Patents.
US2779979A
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Wall and wall unit construction
Assignee: BARCLAY MANUFACTURING Co Inc
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Filing: 1953-03-16
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Granted: 1957-02-05
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Expires: 1973-03-16
Abstract
No abstract record available.
Inventors
- 👤 Ronald R Sundelin
- 👤 Harbor Roslyn
- 👤 Feder Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:17
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0832; E04F13/0833; E04F13/0841; E04F13/0844; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/6803; E04F13/0889
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1676076A
Cited
US2129497A
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US2230688A
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US2305247A
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GB556249A
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US2381469A
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US2708016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |