Patent US2563440A successfully refreshed from Google Patents.
US2563440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thickness gauge
Assignee: —
•
Filing: —
•
Granted: 1951-08-07
•
Expires: 1968-08-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:35
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/02; G01B5/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US455644A
Cited
US517073A
Cited
US846607A
Cited
US1110879A
Cited
US1375747A
Cited
CH116377A
Cited
FR738779A
Cited
CH216190A
Cited
US2293411A
Cited
US2295783A
Cited
US2311323A
Cited
GB556532A
Cited
US2470498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |