US2763196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal roof stack
Assignee: WOODLIN METAL PRODUCTS
•
Filing: 1953-05-04
•
Granted: 1956-09-18
•
Expires: 1973-05-04
Abstract
No abstract record available.
Inventors
- 👤 Benoit M Singleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
F; F23; F23L; F23L17/00; F23L17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US70927A
Cited
US377899A
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US1322711A
Cited
US1202687A
Cited
US1430068A
Cited
US1994809A
Cited
US2372707A
Cited
GB596863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |