Patent US1489567A successfully refreshed from Google Patents.
US1489567A
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Insulating material
Assignee: CF Burgess Laboratories Inc
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Filing: 1919-08-12
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Granted: 1924-04-08
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Expires: 1939-08-12
Abstract
No abstract record available.
Inventors
- 👤 Howard F Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:50
CPC Classifications
D; D21; D21J; D21J1/00; Y; Y10; Y10S; Y10S428/00; Y10S428/907; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31815; Y10T428/31819; Y10T442/00; Y10T442/20; Y10T442/2213; Y10T442/2738; Y10T442/2762; Y10T442/277; Y10T442/282; Y10T442/50; Y10T442/51; Y10T442/54
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) | 1927-04-08 | 1927-10-08 | 1928-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-04-08 | 1931-10-08 | 1932-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-04-08 | 1935-10-08 | 1936-04-08 | $7700.00 | Window Closed / Lapsed |