US2739920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making grain doors
Assignee: Signode Corp
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Filing: 1952-12-15
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Granted: 1956-03-27
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Expires: 1972-12-15
Abstract
No abstract record available.
Inventors
- 👤 Hollinshead T Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:35
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/001; B61D19/002; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T156/1089; Y10T156/1092; Y10T156/1093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE METHOD OF PREFABRICATING LOAD RETAINING DOORS WHICH COMPRISES BONDING TOGETHER A PLURALITY OF SPACED METALLIC REINFORCING STRAPS, AND A FIRST IMPERFORATE PLY OF FABRIC MATERIAL, SELECTIVELY PERFORATING THE METALLIC STRAPS AND THE FIRST PLY SIMULTANEOUSLY, AND BONDING A SECOND AND IMPERFORATE PLY TO THE PERFORATED FIRST PLY AND STRAPS SO AS TO ENCLOSE THE STRAPS BETWEEN THE PLIES.
Claim 2
Independent Claim
59 words
THE METHOD OF PREFABRICATING LOAD RETAINING DOORS WHICH COMPRISES BONDING TOGETHER A PLURALITY OF SPACED METALLIC REINFORCING STRAPS, AND A FIRST IMPERFORATE PLY OF FABRIC MATERIAL, SELECTIVELY PERFORATING THE METALLIC STRAPS AND THE FIRST PLY SIMULTANEOUSLY, AND BONDING A SECOND AND IMPERFORATE PLY TO THE PERFORATED FIRST PLY AND STRAPS SO AS TO ENCLOSE THE STRAPS BETWEEN THE PLIES.
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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |