US3525514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring construction
Assignee: EUGENE B FEINGOLD
•
Filing: 1968-01-10
•
Granted: 1970-08-25
•
Expires: 1988-01-10
Abstract
No abstract record available.
Inventors
- 👤 Lawton H Crosby
- 👤 Eugene B Feingold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:38
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/30; A47C23/00; A47C23/12; A47C23/14; A47C23/155; A47C23/16; A47C23/26; A47C31/00; A47C31/02; A47C31/04; A47C31/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2646108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |