US2609865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring structure
Assignee: Individual
•
Filing: 1949-04-07
•
Granted: 1952-09-09
•
Expires: 1969-04-07
Abstract
No abstract record available.
Inventors
- 👤 Arless J Horton
- 👤 William D Gaston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:43
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/34; A47C7/347
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US426022A
Cited
US1764967A
Cited
US1806405A
Cited
US1925480A
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US2048414A
Cited
US2291390A
Cited
US2265426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |