Patent US3210902A successfully refreshed from Google Patents.
US3210902A
Expired / Lapsed
US
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Sealed fissured roof surface and method therefor
Assignee: Lubrizol Corp
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Filing: 1963-01-28
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Granted: 1965-10-12
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Willis G Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:04
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
IN A FISSURED ROOF SURFACE IN WHICH THE ABUTTING SURFACE EDGES OF SAID FISSURE TEND TO MOVE WITH AMBIENT CONDITIONS, A ROOFING ELEMENT POSITIONED AND ASPHALT ANCHORED ON SUCH SURFACE OVER SUCH FISSURE COMPRISING IN COMBINATION A NARROW, ASPHALT-IMPERNEABLE STRIP COVERING THE FISSURE AND IN FREE MOVEMENT AGAINST THE ROOF SURFACE ON OPPOSITE SIDES OF SAID FISSURE, AND CENTERED LONGITUDINALLY THEREOVER, A WIDER STRIP OF POROUS, TACKY ASPHALT-BONDED
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |