US3468092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite strip shingle
Assignee: Novelis Corp
•
Filing: 1967-12-05
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Granted: 1969-09-23
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Expires: 1987-12-05
Abstract
No abstract record available.
Inventors
- 👤 Alexander A Chalmers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:14
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/26; E04D1/265; E04D1/28; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24264; Y10T428/24355; Y10T428/24372; Y10T428/24479; Y10T428/24612; Y10T428/24777
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US450087A
Cited
US1403392A
Cited
US1638746A
Cited
US2150004A
Cited
US2117763A
Cited
US3138897A
Cited
US3111787A
Cited
US3326366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |