US2708322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring pad structures
Assignee: ZEIDLER Manufacturing Co Inc
•
Filing: 1952-10-01
•
Granted: 1955-05-17
•
Expires: 1972-10-01
Abstract
No abstract record available.
Inventors
- 👤 Frances Lawrence De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:24
CPC Classifications
D; D06; D06F; D06F83/00; B; B21; B21F; B21F27/00; B21F27/12; B21F27/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US136473A
Cited
US1889050A
Cited
US2026346A
Cited
US2443309A
Cited
US2507029A
Cited
US2490981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |