US2519508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring instrument
Assignee: PPG Industries Inc
•
Filing: 1946-09-10
•
Granted: 1950-08-22
•
Expires: 1966-09-10
Abstract
No abstract record available.
Inventors
- 👤 Henry J Schnorbus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:11
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14; E04G21/16; E04G21/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US413930A
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US1325851A
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US1272976A
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US1579702A
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US2220422A
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US2222407A
Cited
US2285582A
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US2404880A
Cited
US2424042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |