Patent US1707829A successfully refreshed from Google Patents.
US1707829A
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US
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Lighting fixture
Assignee: PITTSBURGH VALVE AND FITTINGS
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Filing: 1927-10-24
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Granted: 1929-04-02
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Expires: 1947-10-24
Abstract
No abstract record available.
Inventors
- 👤 Wagner Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:32
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/04; F21V; F21V17/00
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) | 1932-04-01 | 1932-10-01 | 1933-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-04-01 | 1936-10-01 | 1937-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-04-01 | 1940-10-01 | 1941-04-02 | $7700.00 | Window Closed / Lapsed |