Patent US1877481A successfully refreshed from Google Patents.
US1877481A
Expired / Lapsed
US
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Roofing tile and process
Assignee: METLOX Corp Ltd
•
Filing: 1928-11-12
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Granted: 1932-09-13
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Expires: 1948-11-12
Abstract
No abstract record available.
Inventors
- 👤 Theodore C Prouty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:35
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/02; E04D1/04; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24537; Y10T428/2457
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) | 1935-09-13 | 1936-03-14 | 1936-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-09-13 | 1940-03-14 | 1940-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-09-13 | 1944-03-14 | 1944-09-13 | $7700.00 | Window Closed / Lapsed |