Patent US1493447A successfully refreshed from Google Patents.
US1493447A
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US
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Laminated sheet material and method of preventing slippage between the laminations
Assignee: Flintkote Co
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Filing: 1922-06-05
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Granted: 1924-05-06
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Expires: 1942-06-05
Abstract
No abstract record available.
Inventors
- 👤 Otto A Heppes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:05
CPC Classifications
D; D21; D21J; D21J1/00; D21J1/16; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24289; Y10T428/24298; Y10T428/24314; Y10T428/24777; Y10T428/31504; Y10T428/31815; Y10T428/31819; Y10T428/31823
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-05-06 | 1927-11-05 | 1928-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-05-06 | 1931-11-05 | 1932-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-05-06 | 1935-11-05 | 1936-05-06 | $7700.00 | Window Closed / Lapsed |