US3484276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of providing a melted insulating coating on the inner surface of a tubular article
Assignee: US Philips Corp
•
Filing: 1966-07-21
•
Granted: 1969-12-16
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Expires: 1986-07-21
Abstract
No abstract record available.
Inventors
- 👤 Anthonie Jan Burggraaf
- 👤 Ernest Onno Willem Van D Stelt
- 👤 Jacob Willem De Ruiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:27
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/30; H01; H01J; H01J37/00; H01J37/32; H01J37/32009; H01J37/32082; H01J37/321; H01J37/32431; H01J37/32733; H01J37/32752; H01J37/32761; H01J9/00; H01J9/20; H01J2237/00; H01J2237/32; H01J2237/33; H01J2237/332; Y; Y10; Y10S; Y10S65/00; Y10S65/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2040767A
Cited
US2676894A
Cited
US2643956A
Cited
US2940011A
Cited
US3179784A
Cited
US3383163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |