US3505718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-piece sheet metal hollow ball for ball valves
Assignee: General Industries Inc
•
Filing: 1968-01-15
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Granted: 1970-04-14
•
Expires: 1988-01-15
Abstract
No abstract record available.
Inventors
- 👤 Carl F Carlstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:15
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/02; B21D51/08; F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE1185434B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |