Patent US1314840A successfully refreshed from Google Patents.
US1314840A
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Composition for electrolytes for electrical etching.
Assignee: JACKSON S WEEKS
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Filing: 1917-04-30
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Granted: 1919-09-02
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Expires: 1937-04-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Weeks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:06
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/02
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) | 1922-09-01 | 1923-03-03 | 1923-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-09-01 | 1927-03-03 | 1927-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-09-01 | 1931-03-03 | 1931-09-02 | $7700.00 | Window Closed / Lapsed |