Patent US4295771A successfully refreshed from Google Patents.
Patent US1704058A successfully refreshed from Google Patents.
US1704058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating roofing material
Assignee: Flintkote Co
•
Filing: 1923-07-12
•
Granted: 1929-03-05
•
Expires: 1943-07-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Overbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:44
CPC Classifications
E; E04; E04D; E04D15/00; E04D15/02; Y; Y10; Y10S; Y10S264/00; Y10S264/66
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1932-03-04 | 1932-09-03 | 1933-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-03-04 | 1936-09-03 | 1937-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-03-04 | 1940-09-03 | 1941-03-05 | $7700.00 | Window Closed / Lapsed |