US668353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mail canceling and postmarking machine.
Assignee: HAMPDEN CANCELLING MACHINE Co
•
Filing: 1900-01-08
•
Granted: 1901-02-19
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Expires: 1920-01-08
Abstract
No abstract record available.
Inventors
- 👤 William R Landfear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:40
CPC Classifications
G; G07; G07B; G07B17/00; G07B17/00459; G07B17/00508
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) | 1904-02-19 | 1904-08-20 | 1905-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-02-19 | 1908-08-20 | 1909-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-02-19 | 1912-08-20 | 1913-02-19 | $7700.00 | Window Closed / Lapsed |