Patent US2592699A successfully refreshed from Google Patents.
US2592699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Envelope opener
Assignee: Individual
•
Filing: 1946-10-04
•
Granted: 1952-04-15
•
Expires: 1966-10-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Iffland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:04
CPC Classifications
B; B43; B43M; B43M7/00; B43M7/007; Y; Y10; Y10S; Y10S83/00; Y10S83/912; Y10T; Y10T83/00; Y10T83/566; Y10T83/5815; Y10T83/5842; Y10T83/5851; Y10T83/869; Y10T83/8788; Y10T83/929; Y10T83/9411; Y10T83/9447; Y10T83/9457; Y10T83/9473; Y10T83/9478
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US605093A
Cited
US606261A
Cited
US737230A
Cited
US766388A
Cited
US784136A
Cited
US890300A
Cited
US998289A
Cited
US1389881A
Cited
US1416800A
Cited
US1731413A
Cited
GB358864A
Cited
FR746545A
Cited
US2022198A
Cited
US2240975A
Cited
US2312971A
Cited
US2430588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |