US2646108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring
Assignee: ZIG ZAG SPRING Co
•
Filing: 1951-04-30
•
Granted: 1953-07-21
•
Expires: 1971-04-30
Abstract
No abstract record available.
Inventors
- 👤 Harry H Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:39
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2257633A
Cited
US2047411A
Cited
US2169705A
Cited
US2257367A
Cited
US2246893A
Cited
US2308772A
Cited
US2568829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |