US2536677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base threading method and apparatus
Assignee: GTE Sylvania Inc
•
Filing: 1944-08-31
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Granted: 1951-01-02
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Expires: 1964-08-31
Abstract
No abstract record available.
Inventors
- 👤 George V Brunner
- 👤 John J Gresko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:23
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/30; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/5313; Y10T29/532; Y10T29/53257; Y10T29/53696
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |