Patent US3435576A successfully refreshed from Google Patents.
US3435576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking building block
Assignee: Individual
•
Filing: 1966-07-22
•
Granted: 1969-04-01
•
Expires: 1986-07-22
Abstract
No abstract record available.
Inventors
- 👤 John Giannelia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:08
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/04; E04B2/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A CONSTRUCTION ELEMENT COMPRISING AT LEAST TWO IDENTICAL MODULAR UNITS, EACH MODULAR UNIT HAVING A SUBSTANTIALLY SQUARE CROSS-SECTION IN PLAN BOUNDED BY FOUR RECTILINEAR FLAT SIDES, AN UPPER WALL AND A LOWER WALL; ONE OF SAID WALLS BEING OF GABLE-LIKE FORMATION SLOPING DOWNWARDLY FROM A DIAGONALLY EXTENDING V-RIDGE AND THE OTHER WALL BEING FORMED AS A DIAGONALLY EXTENDING VALLEY OPEN AT BOTH ENDS AND WHICH IS THE MIRROR IMAGE OF THE GABLELIKE WALL, THE GABLE-LIKE WALL AND THE VALLEY EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO ONE ANOTHER, ABUTTING UNITS HAVING THEIR RESPECTIVE RIDGES ORIENTED AT 90* TO EACH OTHER TO THEREBY FORM A CONTINUOUS ZIG-ZAG RIDGE LINE.
Claim 2
Dependent Claim
107 words
A CONSTRUCTION ELEMENT COMPRISING AT LEAST TWO IDENTICAL MODULAR UNITS, EACH MODULAR UNIT HAVING A SUBSTANTIALLY SQUARE CROSS-SECTION IN PLAN BOUNDED BY FOUR RECTILINEAR FLAT SIDES, AN UPPER WALL AND A LOWER WALL; ONE OF SAID WALLS BEING OF GABLE-LIKE FORMATION SLOPING DOWNWARDLY FROM A DIAGONALLY EXTENDING V-RIDGE AND THE OTHER WALL BEING FORMED AS A DIAGONALLY EXTENDING VALLEY OPEN AT BOTH ENDS AND WHICH IS THE MIRROR IMAGE OF THE GABLELIKE WALL, THE GABLE-LIKE WALL AND THE VALLEY EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO ONE ANOTHER, ABUTTING UNITS HAVING THEIR RESPECTIVE RIDGES ORIENTED AT 90* TO EACH OTHER TO THEREBY FORM A CONTINUOUS ZIG-ZAG RIDGE LINE.
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |