US2475807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating mechanism
Assignee: Individual
•
Filing: 1947-03-01
•
Granted: 1949-07-12
•
Expires: 1967-03-01
Abstract
No abstract record available.
Inventors
- 👤 Smith August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:13
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/02; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2122; Y10T83/2135; Y10T83/2144; Y10T83/215; Y10T83/2155; Y10T83/2161; Y10T83/217
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US13920A
Cited
US59944A
Cited
US77294A
Cited
US123690A
Cited
US2253259A
Cited
US1913119A
Cited
FR851760A
Cited
US2412066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |