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US2595821A
Expired / Lapsed
US
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Interlocking shingle
Assignee: Individual
•
Filing: 1947-08-20
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Granted: 1952-05-06
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Expires: 1967-08-20
Abstract
No abstract record available.
Inventors
- 👤 Grover C Turman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:01
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/29; E04D1/2907; E04D1/2914; E04D1/2918; E04D1/2916; E04D1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US164203A
Cited
US2421766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |