US3511690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polytetrafluoroethylene-containing coatings on metallic bases
Assignee: National Presto Industries Inc
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Filing: 1967-06-05
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Granted: 1970-05-12
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Expires: 1987-06-05
Abstract
No abstract record available.
Inventors
- 👤 Shaul M Aharoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:23
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/08; B05D5/083; A; A47; A47J; A47J36/00; A47J36/02; C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/18; B05D2506/00; B05D2506/10; B05D2506/15; B05D2601/00; B05D2601/20; B05D2601/28; B05D7/00; B05D7/50; B05D7/52; B05D7/54; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12063; Y10T428/12104; Y10T428/12111; Y10T428/12493; Y10T428/12736; Y10T428/12771; Y10T428/12861; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/31504; Y10T428/3154; Y10T428/31544
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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |