US1647857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1927-03-19
•
Granted: 1927-11-01
•
Expires: 1947-03-19
Abstract
No abstract record available.
Inventors
- 👤 Colbert George Fielding
- 👤 Colbert William Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:27
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C2217/00; C03C2217/20; C03C2217/28; C03C2217/287; C03C2217/288; C03C2218/00; C03C2218/10; C03C2218/11
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) | 1930-10-31 | 1931-05-02 | 1931-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-10-31 | 1935-05-02 | 1935-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-10-31 | 1939-05-02 | 1939-11-01 | $7700.00 | Window Closed / Lapsed |