US3493025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment device for apertured structural members
Assignee: Youngstown Sheet and Tube Co
•
Filing: 1968-04-01
•
Granted: 1970-02-03
•
Expires: 1988-04-01
Abstract
No abstract record available.
Inventors
- 👤 Carl Henry Lalonde
- 👤 James Howard Van Huffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:42
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/04; F16B37/045; F16B37/046; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/97
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172827A
Cited
US2345650A
Cited
GB782428A
Cited
FR1175966A
Cited
GB853581A
Cited
US2975814A
Cited
US3150703A
Cited
FR1494307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |