US1489135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cut-off mechanism
Assignee: Individual
•
Filing: 1923-07-03
•
Granted: 1924-04-01
•
Expires: 1943-07-03
Abstract
No abstract record available.
Inventors
- 👤 Samuel M Langston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:32
CPC Classifications
D; D06; D06H; D06H7/00; D06H7/02; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4691; Y10T83/4737; Y10T83/4766; Y10T83/4775; Y10T83/4795; Y10T83/4818
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) | 1927-04-01 | 1927-10-01 | 1928-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-04-01 | 1931-10-01 | 1932-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-04-01 | 1935-10-01 | 1936-04-01 | $7700.00 | Window Closed / Lapsed |