Patent US2677165A successfully refreshed from Google Patents.
US2677165A
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Concrete form and method of molding concrete columns therewith
Assignee: Sonoco Products Co
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Filing: 1950-10-27
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Granted: 1954-05-04
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Expires: 1970-10-27
Abstract
No abstract record available.
Inventors
- 👤 James E Copenhaver
- 👤 Blanding D Clarkson
- 👤 Jr Auburn Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:17
CPC Classifications
E; E04; E04G; E04G13/00; E04G13/02; E04G13/021; Y; Y10; Y10S; Y10S249/00; Y10S249/04; Y10S425/00; Y10S425/012; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A FORM FOR MOLDING CONCRETE PILLARS AND THE LIKE COMPRISING A SPIRALLY WOUND TUBULAR PAPER BODY HAVING SUFFICIENT RIGIDITY TO SUPPORT A COLUMN OF CONCRETE MIX POURED THEREIN, SAID BODY BEING COATED INTERIORLY WITH A FILM OF POLYETHYLENE, WHEREBY ADHESION OF THE MOLD WALLS TO THE CURED CONCRETE IS PREVENTED.
Claim 2
Dependent Claim
50 words
A FORM FOR MOLDING CONCRETE PILLARS AND THE LIKE COMPRISING A SPIRALLY WOUND TUBULAR PAPER BODY HAVING SUFFICIENT RIGIDITY TO SUPPORT A COLUMN OF CONCRETE MIX POURED THEREIN, SAID BODY BEING COATED INTERIORLY WITH A FILM OF POLYETHYLENE, WHEREBY ADHESION OF THE MOLD WALLS TO THE CURED CONCRETE IS PREVENTED.
References Cited (Backward Citations)
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US2367844A
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US2462331A
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US2491147A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |