US1615801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-insulating construction material
Assignee: Haskelite Manufacturing Corp
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Filing: 1921-02-04
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Granted: 1927-01-25
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Expires: 1941-02-04
Abstract
No abstract record available.
Inventors
- 👤 Elmendorf Armin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:37
CPC Classifications
F; F16; F16L; F16L59/00; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/24; E04C2/243; Y; Y10; Y10S; Y10S215/00; Y10S215/02; Y10S220/00; Y10S220/09; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3167; Y10T428/31678; Y10T428/31703
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) | 1930-01-24 | 1930-07-26 | 1931-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-01-24 | 1934-07-26 | 1935-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-01-24 | 1938-07-26 | 1939-01-25 | $7700.00 | Window Closed / Lapsed |