US2556059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric incandescent lamp and method of manufacturing
Assignee: Tung Sol Lamp Works Inc
•
Filing: 1949-06-21
•
Granted: 1951-06-05
•
Expires: 1969-06-21
Abstract
No abstract record available.
Inventors
- 👤 Reginald K Braunsdorff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:53
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53909; Y10T29/53913; Y10T29/53917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1606276A
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US2006818A
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US1967852A
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US2200954A
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US2269840A
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US2482119A
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US2362171A
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US2464990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |