US3244444A
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Assignee: South Chester Corp
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Filing: 1964-05-08
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Granted: 1966-04-05
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Expires: 1984-05-08
Abstract
No abstract record available.
Inventors
- 👤 Robert H Bisbing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:08
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/007; E05C19/008; E05B; E05B17/00; E05B17/0025; E05B17/0033; E05B17/0037; Y; Y10; Y10T; Y10T292/00; Y10T292/45; Y10T292/47
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A RELEASABLE FASTENING DEVICE FOR DOORS AND THE LIKE, COMPRISING: FEMALE AND MALE SUB-ASSEMBLIES ADAPTED TO BE MOUNTED ON THE DOOR AND FRAME RESPECTIVELY IN MATING RELATION; SAID MALE SUB-ASSEMBLY COMPRISING A FORWARDLY PROJECTING STUD; SAID FEMALE SUB-ASSEMBLY COMPRISING: A TUBULAR SHELL HAVING A PUSH BOTTON IN TE FORWARD PORTION THEREOF, A DISK-LIKE WASHER REARWARD OF SAID PUSH BUTTON AND HAVING A CENTER APERTURE SLIGHTLY LARGER IN DIAMETER THAN THE DIAMETER OF SAID STUD, A HELICAL COMPRESSION SPRING COAXIALLY DISPOSED BETWEEN SAID PUSH BUTTON AND SAID WASHER, STOP MEANS REARWARD OF SAID
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |