US2096309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface treatment of aluminum and aluminum alloys
Assignee: British Aluminum Co Ltd
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Filing: 1935-12-04
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Granted: 1937-10-19
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Expires: 1955-12-04
Abstract
No abstract record available.
Inventors
- 👤 Pullen Alfred Norman Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:59
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16; C25F3/18; C25F3/20; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/06
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) | 1940-10-18 | 1941-04-19 | 1941-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-10-18 | 1945-04-19 | 1945-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-10-18 | 1949-04-19 | 1949-10-19 | $7700.00 | Window Closed / Lapsed |