Patent US3210894A successfully refreshed from Google Patents.
US3210894A
Expired / Lapsed
US
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Method of producing aspheric surfaces on mirrors or lenses
Assignee: Kollmorgen Corp
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Filing: 1962-08-13
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Granted: 1965-10-12
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 George P Bentley
- 👤 Gerald H Lovins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:42
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/0043; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10S425/00; Y10S425/808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A METHOD OF PRODUCING ASPHERICAL SURFACES ON ARTICLES COMPRISING APPLYING FLUID PRESSURE TO AN ARTICLE TO FLEX AND DEFORM IT, GENERATING A CURVED SURFACE ON SAID ARTICLE WHILE IT IS FLEXED AND DEFORMED AND THEREAFTER RESTORING SAID ARTICLE TO AN UNFLEXED AND UNDEFORMED STATE.
Claim 2
Independent Claim
44 words
A METHOD OF PRODUCING ASPHERICAL SURFACES ON ARTICLES COMPRISING APPLYING FLUID PRESSURE TO AN ARTICLE TO FLEX AND DEFORM IT, GENERATING A CURVED SURFACE ON SAID ARTICLE WHILE IT IS FLEXED AND DEFORMED AND THEREAFTER RESTORING SAID ARTICLE TO AN UNFLEXED AND UNDEFORMED STATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |