US1148896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelop or letter opener.
Assignee: Individual
•
Filing: 1914-09-01
•
Granted: 1915-08-03
•
Expires: 1934-09-01
Abstract
No abstract record available.
Inventors
- 👤 Henry A Guderjahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:19
CPC Classifications
B; B26; B26D; B26D1/00; B26D1/56; B26D1/62; B26D1/626; Y; Y10; Y10S; Y10S83/00; Y10S83/912; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2209; Y10T83/485; Y10T83/489; Y10T83/869; Y10T83/8798; Y10T83/8802; Y10T83/8817; Y10T83/8818
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) | 1918-08-02 | 1919-02-01 | 1919-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-08-02 | 1923-02-01 | 1923-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-08-02 | 1927-02-01 | 1927-08-03 | $7700.00 | Window Closed / Lapsed |