US3138898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint for insulating board roof plank
Assignee: Johns Manville Corp
•
Filing: 1957-08-14
•
Granted: 1964-06-30
•
Expires: 1977-08-14
Abstract
No abstract record available.
Inventors
- 👤 David C Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:27
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/16; E04D13/1606; E04D13/1612; E04D13/1618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A JOINT CONSTRUCTION BETWEEN A PAIR OF ROOF DECK SLABS, COMPRISING ADJACENT SIDE EDGES OF THE SLABS, THE ADJACENT SIDE EDGES BEING COMPRISED OF UPPER, LOWER, AND CENTRAL SECTIONS, THE SIDE EDGE OF THE CENTRAL SECTION OF ONE SLAB EXTENDING BEYOND THE SIDE EDGES OF THE UPPER AND LOWER SECTIONS THEREOF, THE SIDE EDGES OF THE UPPER AND LOWER SECTIONS OF THE OTHER SLAB EXTENDING BEYOND THE SIDE EDGE OF THE CENTRAL SECTION THEREOF, THE SIDE EDGES OF THE UPPER SECTIONS OF THE SLABS BEING SLIGHTLY SPACED FROM EACH OTHER AND THE SIDE EDGES OF THE CENTRAL SECTIONS OF THE SLABS BEING SLIGHTLY SPACED FROM EACH OTHER, THE CENTRAL SECTION OF SAID ONE SLAB HAVING AN UPPER BEVELED SURFACE, THE UPPER SECTION OF SAID OTHER SLAB HAVING A LOWER
Claim 2
Dependent Claim
129 words
A JOINT CONSTRUCTION BETWEEN A PAIR OF ROOF DECK SLABS, COMPRISING ADJACENT SIDE EDGES OF THE SLABS, THE ADJACENT SIDE EDGES BEING COMPRISED OF UPPER, LOWER, AND CENTRAL SECTIONS, THE SIDE EDGE OF THE CENTRAL SECTION OF ONE SLAB EXTENDING BEYOND THE SIDE EDGES OF THE UPPER AND LOWER SECTIONS THEREOF, THE SIDE EDGES OF THE UPPER AND LOWER SECTIONS OF THE OTHER SLAB EXTENDING BEYOND THE SIDE EDGE OF THE CENTRAL SECTION THEREOF, THE SIDE EDGES OF THE UPPER SECTIONS OF THE SLABS BEING SLIGHTLY SPACED FROM EACH OTHER AND THE SIDE EDGES OF THE CENTRAL SECTIONS OF THE SLABS BEING SLIGHTLY SPACED FROM EACH OTHER, THE CENTRAL SECTION OF SAID ONE SLAB HAVING AN UPPER BEVELED SURFACE, THE UPPER SECTION OF SAID OTHER SLAB HAVING A LOWER
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |