US3535488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracer beam method of proofing electron beam weld path
Assignee: Rohr Inc
•
Filing: 1967-07-13
•
Granted: 1970-10-20
•
Expires: 1987-07-13
Abstract
No abstract record available.
Inventors
- 👤 Robert W Kitchin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:51
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/14; B23K; B23K15/00; B23K15/02; G; G05; G05B; G05B19/00; G05B19/02; G05B19/42; G05B19/4202; G05B19/4205; H; H01; H01J; H01J37/00; H01J37/30; H01J37/302; H01J37/3023
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |