US1541220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antislip material
Assignee: Unifrax I LLC
•
Filing: 1922-06-28
•
Granted: 1925-06-09
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Expires: 1942-06-28
Abstract
No abstract record available.
Inventors
- 👤 Hutchins Otis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:39
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B14/00; C04B14/02; C04B14/30; C04B14/303; C04B38/00; C04B38/08; C04B2111/00; C04B2111/00474; C04B2111/00482
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) | 1928-06-08 | 1928-12-08 | 1929-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-06-08 | 1932-12-08 | 1933-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-06-08 | 1936-12-08 | 1937-06-09 | $7700.00 | Window Closed / Lapsed |