US3531552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making composite load supporting structure
Assignee: Eaton Corp
•
Filing: 1967-05-04
•
Granted: 1970-09-29
•
Expires: 1987-05-04
Abstract
No abstract record available.
Inventors
- 👤 Edward T Getz
- 👤 Matthew Pacak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/18; B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1271; B29C33/00; B29C33/12; B29C33/14; B29L; B29L2031/00; B29L2031/34; B29L2031/3468; B29L2031/751; B29L2031/771
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA664192A
Cited
US2838100A
Cited
US3112987A
Cited
US3204016A
Cited
US3273179A
Cited
US3264382A
Cited
US3239584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |