US3413140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating of autoclaved asbestoscement products
Assignee: International Business Machines Corp
•
Filing: 1965-01-04
•
Granted: 1968-11-26
•
Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 William A Heausler
- 👤 Robert M Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:33
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/52; C04B41/60; C04B41/61; C04B41/70; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2221420A
Cited
US2716619A
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US2837444A
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US3011988A
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US3085907A
Cited
US3000842A
Cited
US3106486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |