Patent US646638A successfully refreshed from Google Patents.
US646638A
Expired / Lapsed
US
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Envelop.
Assignee: Individual
•
Filing: 1900-01-23
•
Granted: 1900-04-03
•
Expires: 1920-01-23
Abstract
No abstract record available.
Inventors
- 👤 Harry M Cutler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:46
CPC Classifications
B; B65; B65D; B65D27/00; Y; Y10; Y10S; Y10S229/00; Y10S229/928; Y10T; Y10T24/00; Y10T24/14; Y10T24/1402; Y10T24/1406
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) | 1903-04-03 | 1903-10-03 | 1904-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-04-03 | 1907-10-03 | 1908-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-04-03 | 1911-10-03 | 1912-04-03 | $7700.00 | Window Closed / Lapsed |