US2993737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for propelling articles
Assignee: AT&T Inc
•
Filing: 1960-02-23
•
Granted: 1961-07-25
•
Expires: 1980-02-23
Abstract
No abstract record available.
Inventors
- 👤 William F Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:04
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/02; B65; B65G; B65G51/00; B65G51/02; H; H05; H05K; H05K13/00; H05K13/02; H05K13/027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |