US1998078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing mix-tone roofing
Assignee: BARBER ASPHALT Co
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Filing: 1927-09-12
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Granted: 1935-04-16
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Expires: 1947-09-12
Abstract
No abstract record available.
Inventors
- 👤 Freegard William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:07
CPC Classifications
D; D21; D21J; D21J1/00; D21J1/16; D21J1/20
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) | 1938-04-15 | 1938-10-15 | 1939-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-15 | 1942-10-15 | 1943-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-15 | 1946-10-15 | 1947-04-16 | $7700.00 | Window Closed / Lapsed |