US2074147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for surfacing roofing
Assignee: Barrett Co Inc
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Filing: 1933-10-26
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Granted: 1937-03-16
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Expires: 1953-10-26
Abstract
No abstract record available.
Inventors
- 👤 Richard A Holdsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:21
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) | 1940-03-15 | 1940-09-14 | 1941-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-15 | 1944-09-14 | 1945-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-15 | 1948-09-14 | 1949-03-16 | $7700.00 | Window Closed / Lapsed |