Patent US2472100A successfully refreshed from Google Patents.
US2472100A
Expired / Lapsed
US
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Bituminous mastic coated metal sheet
Assignee: Beazer East Inc
•
Filing: 1943-11-06
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Granted: 1949-06-07
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Expires: 1963-11-06
Abstract
No abstract record available.
Inventors
- 👤 Jr William F Fair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:28
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/64; E04B1/642; C; C08; C08L; C08L95/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31714; Y10T428/31717
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |