US2708573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for liquid springs
Assignee: WALES STRIPPIT CORP
•
Filing: 1952-07-10
•
Granted: 1955-05-17
•
Expires: 1972-07-10
Abstract
No abstract record available.
Inventors
- 👤 Rovoldt Charles Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:03
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/36; F16F9/362; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB105053A
Cited
US1362435A
Cited
US1955157A
Cited
US2333096A
Cited
DE749942C
Cited
US2549818A
Cited
US2456356A
Cited
US2658809A
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 |