US1574615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing material
Assignee: Paraffine Companies Inc
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Filing: 1921-11-28
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Granted: 1926-02-23
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Expires: 1941-11-28
Abstract
No abstract record available.
Inventors
- 👤 Cornelius S Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:17
CPC Classifications
D; D06; D06N; D06N5/00; F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/12; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/31504; Y10T428/31678; Y10T428/31717; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2107; Y10T442/2115; Y10T442/2221; Y10T442/2254
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) | 1929-02-22 | 1929-08-24 | 1930-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-02-22 | 1933-08-24 | 1934-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-02-22 | 1937-08-24 | 1938-02-23 | $7700.00 | Window Closed / Lapsed |