US3428975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring seat construction
Assignee: Young Spring and Wire Corp
•
Filing: 1967-05-15
•
Granted: 1969-02-25
•
Expires: 1987-05-15
Abstract
No abstract record available.
Inventors
- 👤 Lionel Gamelcy
- 👤 Henry J Tischler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:22
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3070814A
Cited
US3081130A
Cited
US3169899A
Cited
US3273179A
Cited
US3315283A
Cited
US3317935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |