US3513614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for constructing an insulated roof structure
Assignee: ILLINI BUILDING SYSTEMS Inc
•
Filing: 1969-02-03
•
Granted: 1970-05-26
•
Expires: 1989-02-03
Abstract
No abstract record available.
Inventors
- 👤 James D Studzinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:35
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/16; E04D13/1606; E04D13/1612; E04D13/1618
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2054531A
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US2102902A
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US2299908A
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GB627013A
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GB589754A
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US2590687A
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GB672297A
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US2799232A
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US2832300A
Cited
US3141206A
Cited
US3173224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |