Patent US3580423A successfully refreshed from Google Patents.
Patent US1354833A successfully refreshed from Google Patents.
US1354833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic-tool-valve protector
Assignee: Individual
•
Filing: 1919-12-17
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Granted: 1920-10-05
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Expires: 1939-12-17
Abstract
No abstract record available.
Inventors
- 👤 Keller Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:20
CPC Classifications
B; B25; B25D; B25D9/00; B25D9/14; B25D9/16; B25D9/20; B25D2209/00; B25D2209/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1923-10-05 | 1924-04-05 | 1924-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-10-05 | 1928-04-05 | 1928-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-10-05 | 1932-04-05 | 1932-10-05 | $7700.00 | Window Closed / Lapsed |