US1020480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for preventing corrosion of surface condensers and other metal structures.
Assignee: ALEXANDER MARKELL
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Filing: 1911-04-27
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Granted: 1912-03-19
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Expires: 1931-04-27
Abstract
No abstract record available.
Inventors
- 👤 Peregrine Elliott Gloucester Cumberland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:48
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; F; F28; F28F; F28F19/00; F28F19/004; C23F13/06; C23F13/08; C23F13/10; C23F13/22; F28D; F28D7/00; F28D7/16; F28D21/00; F28D2021/0019; F28D2021/0061; F28D2021/0063
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) | 1915-03-19 | 1915-09-18 | 1916-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-03-19 | 1919-09-18 | 1920-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-03-19 | 1923-09-18 | 1924-03-19 | $7700.00 | Window Closed / Lapsed |