US2944523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust protector cap for percussive hammers
Assignee: Individual
•
Filing: 1958-04-02
•
Granted: 1960-07-12
•
Expires: 1978-04-02
Abstract
No abstract record available.
Inventors
- 👤 Frank A Werstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:34
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/005; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17042; Y10T279/17111
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE457166C
Cited
US777681A
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US917575A
Cited
US1408691A
Cited
US2088670A
Cited
US2154651A
Cited
US2685874A
Cited
US2834577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |