US1506307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode
Assignee: KIRKALDY ENGINEERING Corp
•
Filing: 1923-10-30
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Granted: 1924-08-26
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Expires: 1943-10-30
Abstract
No abstract record available.
Inventors
- 👤 Kirkaldy Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:57
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/48; C02F1/46; C02F1/461; C02F1/46104; C02F1/46109; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/10; C23F13/18; C02F2303/00; C02F2303/22
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) | 1927-08-26 | 1928-02-25 | 1928-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-08-26 | 1932-02-25 | 1932-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-08-26 | 1936-02-25 | 1936-08-26 | $7700.00 | Window Closed / Lapsed |