Microsoft Word 10.0.2627;UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM 12B-25
NOTIFICATION OF LATE FILING
Commission File Number: 333-87224
(Check One): [ ] Form 10-K [_] Form 20-F [_] Form 11-K [X] Form 10-Q
[_] Form N-SAR
For Quarterly Period Ended: March 31, 2005
[_] Transition Report on Form 10-K
[_] Transition Report on Form 20-F
[_] Transition Report on Form 11-K
[_] Transition Report on Form 10-Q
[_] Transition Report on Form N-SAR
For the Transition Period Ended:
Read attached instruction sheet before preparing form. Please print or type.
Nothing in this form shall be construed to imply that the Commission has
verified any information contained herein.
If the notification relates to a portion of the filing checked above, identify
the item(s) to which the notification relates:
PART I -- REGISTRANT INFORMATION
Full name of registrant: Electronic Sensor Technology, Inc.
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Former name if applicable: Bluestone Ventures, Inc.
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Address of principal executive office
(Street and number): 1077 Business Center Circle
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City, state and zip code: Newbury Park, CA 91320
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PART II -- RULES 12b-25(b) AND (c)
If the subject report could not be filed without unreasonable effort or
expense and the registrant seeks relief pursuant to Rule 12b-25(b), the
following should be completed. (Check box if appropriate.)
(a) The reasons described in reasonable detail in Part III of this form
could not be eliminated without unreasonable effort or expense;
[x] (b) The subject annual report, semi-annual report, transition report
on Form 10-K, Form 20-F, 11-K or Form N-SAR, or portion thereof, will
be filed on or before the fifteenth calendar day following the
prescribed due date; or the subject quarterly report or transition
report on Form 10-Q, or portion thereof will be filed on or before
the fifth calendar day following the prescribed due date; and
(c) The accountant's statement or other exhibit required by Rule
12b-25(c) has been attached if applicable.
PART III -- NARRATIVE
State below in reasonable detail the reasons why Forms 10-K, 20-F,
11-K, 10-Q, N-SAR, or the transition report portion thereof, could not be filed
within the prescribed time period. (Attach extra sheets if needed.)
The Company has experienced a delay in completing the information
necessary for inclusion in its March 31, 2005 Form 10-QSB Quarterly Report. The
Company expects to file the Form 10-QSB within the allotted extension period.
PART IV -- OTHER INFORMATION
(1) Name and telephone number of person to contact in regard to this
notification
Francis Chang (805) 480-1994
Name (Area code) Telephone Number
(2) Have all other periodic reports required under Section 13 or 15(d) of the
Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of
1940 during the preceding 12 months or for such shorter period that the
registrant was required to file such report(s) been filed? If the answer is no,
identify report(s). [X] Yes [ ] No
(3) Is it anticipated that any significant change in results of operations from
the corresponding period for the last fiscal year will be reflected by the
earnings statements to be included in the subject report or portion thereof?
[ ] Yes [X] No
Electronic Sensor Technology, Inc.
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(Name of Registrant as Specified in Charter)
has caused this notification to be signed on its behalf by the undersigned
hereunto duly authorized.
Date: May 16, 2005 By:
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Francis Chang
Vice President, Finance and Administration