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Patent US1451777A successfully refreshed from Google Patents.
US1451777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for readily fastening together loose leaves of paper
Assignee: Individual
•
Filing: 1919-11-05
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Granted: 1923-04-17
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Expires: 1939-11-05
Abstract
No abstract record available.
Inventors
- 👤 Jobst Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:47
CPC Classifications
B; B42; B42F; B42F9/00; Y; Y10; Y10T; Y10T24/00; Y10T24/20; Y10T24/202; Y10T24/205; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44778; Y10T24/44786; Y10T24/44821; Y10T24/44966; Y10T24/44974
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) | 1926-04-16 | 1926-10-16 | 1927-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-04-16 | 1930-10-16 | 1931-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-04-16 | 1934-10-16 | 1935-04-17 | $7700.00 | Window Closed / Lapsed |