US3452565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge machine and method of metal forming
Assignee: Rohr Inc
•
Filing: 1964-11-23
•
Granted: 1969-07-01
•
Expires: 1984-11-23
Abstract
No abstract record available.
Inventors
- 👤 Gilbert C Cadwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:21
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3364708A
Cited
US2931947A
Cited
US3232085A
Cited
US3093770A
Cited
US3222902A
Cited
US3232086A
Cited
US3225252A
Cited
US3234429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |