US2489748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled pressure gun
Assignee: Individual
•
Filing: 1945-09-06
•
Granted: 1949-11-29
•
Expires: 1965-09-06
Abstract
No abstract record available.
Inventors
- 👤 Burney Charles Dennistoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:06
CPC Classifications
F; F41; F41A; F41A21/00; F41A21/28; F41A1/00; F41A1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB125126A
Cited
GB191012227A
Cited
GB126336A
Cited
US1380358A
Cited
FR601830A
Cited
GB468583A
Cited
CH212873A
Cited
US2405414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |