Patent US3173186A successfully refreshed from Google Patents.
US3173186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screened vent auxiliary form
Assignee: Individual
•
Filing: 1963-09-26
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Granted: 1965-03-16
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Expires: 1983-09-26
Abstract
No abstract record available.
Inventors
- 👤 Lyon L Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:37
CPC Classifications
E; E04; E04G; E04G15/00; E04G15/06; E04G15/063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN COMBINATION, A CONCRETE WALL FORM, AND A SCREENED VENT AUXILIARY FORM ADJACENT TO THE UPPER EDGE OF SAID CONCRETE WALL FORM LOCATING A SHEET FOR COVERING A VENT TO BE PROVIDED IN THE CONCRETE WALL INCLUDING A PAIR OF STRIPS OF SIMILAR ARCHED GENERALLY U-SHAPED PROFILE OF AN EXTENT IN EACH DIRECTION LESS THAN THE CORRESPONDING EXTENT OF SUCH SHEET AND OF A COMBINED WIDTH SUBSTANTIALLY EQUAL TO THE INTERIOR WIDTH OF SAID WALL FORM AND HAVING EYES IN OPPOSITE ENDS DISPOSED IN REGISTRY WHEN SAID STRIPS ARE DISPOSED IN EDGEWISE REGISTRY AND A PAIR OF RODS EXTENDING THROUGH THE REGISTERING EYES OF SAID PAIR OF STRIPS MAINTAINING SAID STRIPS IN EDGEWISE REGISTRY WITH EACH OTHER AND SUCH SHEET LODGED BETWEEN THE ADJACENT EDGES OF SAID REGISTERING STRIPS.
Claim 2
Dependent Claim
129 words
IN COMBINATION, A CONCRETE WALL FORM, AND A SCREENED VENT AUXILIARY FORM ADJACENT TO THE UPPER EDGE OF SAID CONCRETE WALL FORM LOCATING A SHEET FOR COVERING A VENT TO BE PROVIDED IN THE CONCRETE WALL INCLUDING A PAIR OF STRIPS OF SIMILAR ARCHED GENERALLY U-SHAPED PROFILE OF AN EXTENT IN EACH DIRECTION LESS THAN THE CORRESPONDING EXTENT OF SUCH SHEET AND OF A COMBINED WIDTH SUBSTANTIALLY EQUAL TO THE INTERIOR WIDTH OF SAID WALL FORM AND HAVING EYES IN OPPOSITE ENDS DISPOSED IN REGISTRY WHEN SAID STRIPS ARE DISPOSED IN EDGEWISE REGISTRY AND A PAIR OF RODS EXTENDING THROUGH THE REGISTERING EYES OF SAID PAIR OF STRIPS MAINTAINING SAID STRIPS IN EDGEWISE REGISTRY WITH EACH OTHER AND SUCH SHEET LODGED BETWEEN THE ADJACENT EDGES OF SAID REGISTERING STRIPS.
References Cited (Backward Citations)
US812365A
Cited
GB174729A
Cited
US1586030A
Cited
US1851399A
Cited
US2548343A
Cited
US2640248A
Cited
US2787820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |