US3520100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigid interlocking overlapping panel joint with a drain groove
Assignee: ARMCO ATLANTIC Inc PO BOX 465622 CINCINNATI OH 45246-5622 A CORP OF DE
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Filing: 1968-08-12
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Granted: 1970-07-14
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Expires: 1988-08-12
Abstract
No abstract record available.
Inventors
- 👤 Jesse J Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:50
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/24; E04D13/00; E04D13/04; E04D13/0404; E04D13/0445; E04D13/0481
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US162722A
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CH50858A
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US1179523A
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US1681819A
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US1977391A
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US2033304A
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US2186297A
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US2417899A
Cited
US3041784A
Cited
US3150465A
Cited
FR1352957A
Cited
US3308596A
Cited
US3323268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |