US3100953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precast block and wall construction
Assignee: Individual
•
Filing: 1960-02-15
•
Granted: 1963-08-20
•
Expires: 1980-02-15
Abstract
No abstract record available.
Inventors
- 👤 Delbert H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:09
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/28; E04B2/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A BUILDING BLOCK INCLUDING A SUBSTANTIALLY RECTANGULAR PLANAR BASE HAVING A LENGTH IN EXCESS OF THE WIDTH THEREOF, A PLURALITY OF PROJECTIONS EXTENDING GENERALLY NORMAL TO SAID BASE, EACH OF SAID PROJECTIONS CONSTITUTING A ONE-QUARTER SEGMENT OF A CYLINDER, A PAIR OF SAID PROJECTIONS BEING DISPOSED WITH THEIR RESPECTIVE CENTERS OF CURVATURE AT THE CENTER OF SAID BASE AND LYING ALONG A DIAGONAL OF SAID BASE WITH ADJACENT SIDES OF THE RESPECTIVE PROJECTIONS DEFINING A RIGHT ANGLE, A PROJECTION DISPOSED AT THE CORNERS OF SAID BASE CONTAINING SAID DIAGONAL WITH THE CENTERS OF CURVATURE AT SAID CORNERS, AND A PROJECTION POSI-
Claim 2
Dependent Claim
101 words
A BUILDING BLOCK INCLUDING A SUBSTANTIALLY RECTANGULAR PLANAR BASE HAVING A LENGTH IN EXCESS OF THE WIDTH THEREOF, A PLURALITY OF PROJECTIONS EXTENDING GENERALLY NORMAL TO SAID BASE, EACH OF SAID PROJECTIONS CONSTITUTING A ONE-QUARTER SEGMENT OF A CYLINDER, A PAIR OF SAID PROJECTIONS BEING DISPOSED WITH THEIR RESPECTIVE CENTERS OF CURVATURE AT THE CENTER OF SAID BASE AND LYING ALONG A DIAGONAL OF SAID BASE WITH ADJACENT SIDES OF THE RESPECTIVE PROJECTIONS DEFINING A RIGHT ANGLE, A PROJECTION DISPOSED AT THE CORNERS OF SAID BASE CONTAINING SAID DIAGONAL WITH THE CENTERS OF CURVATURE AT SAID CORNERS, AND A PROJECTION POSI-
References Cited (Backward Citations)
AT36885B
Cited
US1052788A
Cited
FR540341A
Cited
US1799313A
Cited
GB464719A
Cited
US2145187A
Cited
FR913772A
Cited
FR1016962A
Cited
FR1122182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |