US3795561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical etchers for minute parts
Assignee: Buckbee Mears Co
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Filing: 1972-07-24
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Granted: 1974-03-05
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Expires: 1992-07-24
Abstract
Abstract A vertical etcher is provided having means for controlling the angular velocity as well as the linear velocity of a part as it passes through a multiple nozzle spray etching chamber. Further means are included for spacing and adjusting the enchant spray nozzles to produce a uniform spray of etchant over the part to be etched as well as etchant wipers located at the entrance and exit to the etchant chambers to stop the etching action as quickly as possible.
Inventors
- 👤 H Bond
- 👤 M Rucinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:01
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/08; B; B05; B05B; B05B13/00; B05B13/02; B05B13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |