US2533487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas hammer
Assignee: Chicago Pneumatic Tool Co LLC
•
Filing: 1946-08-15
•
Granted: 1950-12-12
•
Expires: 1966-08-15
Abstract
No abstract record available.
Inventors
- 👤 Spencer B Maurer
- 👤 Howard P Ebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:43
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/06; B25D9/00; B25D9/06; B25D9/10; F; F02; F02B; F02B63/00; F02B63/02; F02B75/00; F02B75/16; F02B75/02; F02B2075/022; F02B2075/025; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20666
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1160474A
Cited
US1035182A
Cited
US1159462A
Cited
US1217762A
Cited
US1219759A
Cited
US1516637A
Cited
US2268954A
Cited
US2273095A
Cited
US2275285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |