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US1434860A
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Assignee: PPG Industries Inc
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Filing: 1921-10-06
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Granted: 1922-11-07
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Expires: 1941-10-06
Abstract
No abstract record available.
Inventors
- 👤 William H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:12
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12236; Y10T428/12243; Y10T428/12271; Y10T428/12389; Y10T428/12444; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12556; Y10T428/12569; Y10T428/12597; Y10T428/12771; Y10T428/12861; Y10T428/12896; Y10T428/12903; Y10T428/12986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1925-11-06 | 1926-05-08 | 1926-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-11-06 | 1930-05-08 | 1930-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-11-06 | 1934-05-08 | 1934-11-07 | $7700.00 | Window Closed / Lapsed |