US3352074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door frame fastening device
Assignee: WILLIAMSBURG STEEL PRODUCTS CO
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Filing: 1965-08-13
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Granted: 1967-11-14
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Expires: 1985-08-13
Abstract
No abstract record available.
Inventors
- 👤 Schwartzberg Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:06
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/56; E06B1/60; E06B1/6046; E06B1/6061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A WALL BUCK COMPRISING: A CHANNEL OF U-SHAPED CROSS-SECTION HAVING A BASE AND TWO SIDE PORTIONS, THE FREE ENDS OF EACH OF SAID SIDE PORTIONS FORMED INTO CHANNELS; A RECESS OF U-SHAPED CROSS-SECTION IN THE BASE OF SAID U-SHAPED CHANNEL, ONE OF THE SIDE PORTIONS OF SAID RECESS HAVING A PLURALITY OF OPENINGS AT PRESCRIBED POINTS ALONG ITS LENGTH; A PLURALITY OF OPPOSED PAIRS OF REINFORCING MEMBERS POSITIONED ALONG THE LENGTH OF SAID U-SHAPED CHANNEL AND SAID RECESS AT POINTS ALIGNED WITH SAID OPENINGS IN SAID RECESS, ONE MEMBER OF EACH PAIR HAVING ONE END THEREOF INSERTED INTO THE CHANNEL FORMED AT THE FREE END OF ONE OF SAID SIDE PORTIONS OF SAID U-SHAPED CHANNEL AND THE OTHER MEMBER OF EACH PAIR HAVING ONE END THEREOF INSERTED INTO THE CHANNEL FORMED AT THE FREE END OF THE OTHER OF SAID SIDE PORTIONS OF SAID U-SHAPED CHANNEL, THE
Claim 2
Dependent Claim
147 words
A WALL BUCK COMPRISING: A CHANNEL OF U-SHAPED CROSS-SECTION HAVING A BASE AND TWO SIDE PORTIONS, THE FREE ENDS OF EACH OF SAID SIDE PORTIONS FORMED INTO CHANNELS; A RECESS OF U-SHAPED CROSS-SECTION IN THE BASE OF SAID U-SHAPED CHANNEL, ONE OF THE SIDE PORTIONS OF SAID RECESS HAVING A PLURALITY OF OPENINGS AT PRESCRIBED POINTS ALONG ITS LENGTH; A PLURALITY OF OPPOSED PAIRS OF REINFORCING MEMBERS POSITIONED ALONG THE LENGTH OF SAID U-SHAPED CHANNEL AND SAID RECESS AT POINTS ALIGNED WITH SAID OPENINGS IN SAID RECESS, ONE MEMBER OF EACH PAIR HAVING ONE END THEREOF INSERTED INTO THE CHANNEL FORMED AT THE FREE END OF ONE OF SAID SIDE PORTIONS OF SAID U-SHAPED CHANNEL AND THE OTHER MEMBER OF EACH PAIR HAVING ONE END THEREOF INSERTED INTO THE CHANNEL FORMED AT THE FREE END OF THE OTHER OF SAID SIDE PORTIONS OF SAID U-SHAPED CHANNEL, THE
References Cited (Backward Citations)
US1245018A
Cited
US3248833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |