US2628450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke ring projector
Assignee: Individual
•
Filing: 1949-05-02
•
Granted: 1953-02-17
•
Expires: 1969-05-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Shelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:51
CPC Classifications
F; F15; F15D; F15D1/00; F15D1/08; A; A63; A63H; A63H33/00; A63H33/28; F15D1/009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US827789A
Cited
US1069207A
Cited
US1283619A
Cited
US1548693A
Cited
US1997235A
Cited
US2061471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |