US3137889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door check
Assignee: Individual
•
Filing: 1960-09-27
•
Granted: 1964-06-23
•
Expires: 1980-09-27
Abstract
No abstract record available.
Inventors
- 👤 Kaloust P Sogoian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A DOOR CHECK COMPRISING AN INTERMEDIATE V-SHAPED YIELDING EXPANSIBLE PORTION AND A PAIR OF ARMS EXTENDING OUTWARDLY AWAY FROM SAID V-SHAPED EXPANSIBLE PORTION, ONE END OF ONE ARM BEING FIXED TO ONE END OF SAID EXPANSIBLE PORTION AND ONE END OF THE OTHER ARM BEING FIXED TO THE OTHER END OF SAID EXPANSIBLE PORTION, THE OTHER END OF SAID ONE ARM BEING ADAPTED TO BE FASTENED TO A DOOR, THE OTHER END OF SAID OTHER ARM BEING ADAPTED TO BE PIVOTED DIRECTLY TO A DOOR JAMB, SAID ARMS LYING IN SUBSTANTIALLY THE SAME PLANE AS SAID EXPANSIBLE PORTION.
Claim 2
Dependent Claim
98 words
A DOOR CHECK COMPRISING AN INTERMEDIATE V-SHAPED YIELDING EXPANSIBLE PORTION AND A PAIR OF ARMS EXTENDING OUTWARDLY AWAY FROM SAID V-SHAPED EXPANSIBLE PORTION, ONE END OF ONE ARM BEING FIXED TO ONE END OF SAID EXPANSIBLE PORTION AND ONE END OF THE OTHER ARM BEING FIXED TO THE OTHER END OF SAID EXPANSIBLE PORTION, THE OTHER END OF SAID ONE ARM BEING ADAPTED TO BE FASTENED TO A DOOR, THE OTHER END OF SAID OTHER ARM BEING ADAPTED TO BE PIVOTED DIRECTLY TO A DOOR JAMB, SAID ARMS LYING IN SUBSTANTIALLY THE SAME PLANE AS SAID EXPANSIBLE PORTION.
References Cited (Backward Citations)
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Cited
US1319554A
Cited
US1263931A
Cited
GB355394A
Cited
US1916882A
Cited
US2149074A
Cited
US2565442A
Cited
FR1036200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |