US3407557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-aligning shingle
Assignee: MARY ELLEN SHAW
•
Filing: 1966-09-14
•
Granted: 1968-10-29
•
Expires: 1986-09-14
Abstract
No abstract record available.
Inventors
- 👤 Shaw Mary Ellen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:52
CPC Classifications
E; E04; E04D; E04D1/00; E04D1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA604270A
Cited
US1494707A
Cited
US1538329A
Cited
US2106315A
Cited
USRE22571E
Cited
US2421407A
Cited
US2588673A
Cited
US3309831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |