US2666402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing shingle
Assignee: Johns Manville Corp
•
Filing: 1948-08-10
•
Granted: 1954-01-19
•
Expires: 1968-08-10
Abstract
No abstract record available.
Inventors
- 👤 George W Clarvoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:14
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/26; E04D1/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848076A
Cited
US2210209A
Cited
US2300488A
Cited
US2390697A
Cited
US2418135A
Cited
US2421892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |