Patent US1466246A successfully refreshed from Google Patents.
US1466246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproof wall board
Assignee: Individual
•
Filing: 1920-10-13
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Granted: 1923-08-28
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Expires: 1940-10-13
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Parkyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:14
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C04B14/00; C04B14/38; C04B14/40; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
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) | 1926-08-27 | 1927-02-26 | 1927-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-08-27 | 1931-02-26 | 1931-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-08-27 | 1935-02-26 | 1935-08-28 | $7700.00 | Window Closed / Lapsed |