US2854560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical engraving machines
Assignee: Individual
•
Filing: 1956-09-28
•
Granted: 1958-09-30
•
Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Hill John William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:26
CPC Classifications
B; B23; B23H; B23H7/00; B23H7/26; B23H7/28; B23K; B23K7/00; B23K7/001; B23K9/00; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/54; B23Q1/545; B23Q1/5462; B23Q1/56; B23Q1/60; B23Q1/62; B23Q1/621
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US37235A
Cited
US190797A
Cited
US1434602A
Cited
GB378961A
Cited
US2068166A
Cited
US2339716A
Cited
US2416125A
Cited
FR1063033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |